Specifications 1.Play music from bluetooth devices 2.Stereo 3.Portable external design with good quality 4.logo printing is available. Cool wireless Bluetooth headphone Bluetooth Version:V2.1, V2.0 ,V1.2 and standard V1.1Support Bluetooth profilesA2DP , AVRCP ,Headset Profile , Handsfree ProfileApplicable modelsCompatible with all smart mobile phone and tabletsEffective distance10 meter diameterFrequency2402MHz to 2480 MHz ISM BandMic Sensitivity45 dB (0dB=1V/pa ,1KHz)Talk time ( Fully charged )about 8 hoursStand by time( Fully charged )about 600 hoursOperating Voltage3.3V-4.2VCharging Voltage5VBattery Capacity500mACharging timeless than 4 hoursMatching method1. press power button lightly ,then the bluetooth mold of headset will open automatically 2. use your mobile phone to search the bluetooth connection "BH450B" 3. follow the tips and connect .if connected , you can use it nowAccessoriesone 3.5mm standard audio cable , one USB charege cab
Brand Name: RATE Model Number: BT 001 Style: Headband Communication: Wireless Connectors: bluetooth Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: Normal Standard Packing. Delivery Detail: Sample: 3 days; Order: 2 Weeks Specifications Wireless Headphone 1. 2 Years Warranty 2. Fashion Design 3. OEM
Specifications Bluetooth headphones Suitable for ipod/iphone/laptop etc small wireless headphones Fully CE ROHS 2013 wireless stereo bluetooth headphone/headset ------------------------Product Performance ------------------------- 1Folding portable plug-in card bluetooth headphones 2V2.1+EDR Blooth version,High data rate; 3can connect with phone, convenient for talk4Wearing type elegant appearance design, fashionable avant-courier; 5OLED display,the play state be clear at a glance; 6Intelligent lyrics displayed function,will be played on the display lyrics(LFC format for file); 7The Hi-Fi stereo,let you move feeling,three-dimensional transparence service of music;8Wearing the soft plastic material design,comfortable wearing;98 kinds of sound choice,meet different music needs 10The built-in recording function,can record outside of the audio source 11The built-in battery for 12 hours12 Support the operating system:windows98/SE/ME/2K/XP Vista MAC OS 9.2
Specifications 1,New Design Model 2,Factory High quality and cheaper price 3,Best product for your sale 4,Large in stock BLUETOOTH STEREO HEADSET USER GUIDE I. Introduction NEXTPREVIEWLED INDICATIONMULTI-FUNCTION BUTTOM(MFB)VOLUME UPVOLUME D
Specifications noise cancelling helmet headset 1.Bluetooth version: V3.0+EDR,Operation range: Up to 10 meters 2.Noise canceling headset Model no:HH3005-H37 Product Spec: Operation range: Up to 10 metersBluetooth version: V2.1+EDR,Chipset: CSR Bc4Talk time: Up to 5 hours,Standby time: Up to 120 hoursWeight About: 8 GramsDimensions(L x W x H): 44 x 19x 10.5 mm
Brand Name: xinqite Model Number: F233 Style: In-Ear Communication: Wireless Use: Mobile Phone Function: Bluetooth Place of Origin: Zhejiang China (Mainland) Packaging & Delivery Packaging Detail: Carton Delivery Detail: According to your order Specifications 1.Material:ABS+electronic elements 2.Size:2.5*1.5cm 3.Packing:Color+PVC Best motorcycle bluetooth headset Material:ABS+electronicSize:2.5*1.5cmWeight:59g Packing:color+PVCPacking:14*9*3.5cmPacking quantity:50 pcs per ctn Equipped with power charger and bluetooth headset hang
Specifications 10m connection Built-in microphone and rechargeable Li-ion battery Key Specifications 1.Frequency response : 20 Hz – 20KHz 2.Bluetooth® : V2.1 + EDR 3.Transmission Mode : GFSK 4.Operating voltage : 3.7 V 5.Signal-to-noise ratio : > 80 dB 6.Channel separation : >30 dB 7.Distortion : <2% Feutures: 1. Pause the music & Play back automatically when receives an incoming call 2. Micro USB connector allows charging via AC power adaptor or computer USB por
Specifications 2013 new type wireless bluetooth headset have faddish and cool colors memory pairing + echo cancellation stereo high quality 2013 new type wireless bluetooth headset /faddish and cool iphone headsetProduct features:1) bluetooth headset, head type wireless bluetooth headset, high quality, stereo.2 memory pairing /echo cancellation, music/speech automatic switching. Can be pairing and connection to all have bluetooth phone 3) clear dialogue, anytime, anywhere, enjoy your wireless free! Super easy super convenient feeling! Super quality ultra smooth enjoy!
Specifications Bluetooth earphone for laptop and cell phone Feather: 1) OEM brand 2)Customerized 3)Easy-to- carry 4 )Waterproof Bluetooth headphone for laptop and cell phone Features: Multimedia Headphone for Computer, MP3/4 player. Miniature ear buds make you comfortable Suitable for children Portable frame and easy to carry Perfect voice and beautiful appearance.Specifications: Speaker: diameter 27 Mylar Impedance:32Ω at 1K Hz Sensitivity:105dB±3dB at 1KHZ Frequency response: 20-20,000HZ Rated Power:100mW Mic Dimension:φ9.7×4.5 Polar Pattern: omni-directional Sensitivity:-58±2dB Plug Type:φ3.5
Brand Name: Gamechn Style: Ear Hook Communication: Wireless Connectors: USB Use: video game Function: Bluetooth Specifications We offer Bluetooth Headset for ps3,wireless bluetooth headset,for ps3 accessories. We offer Bluetooth Headset for ps3,wireless bluetooth headset,for ps3 accessoriesShipping Order will be shipped within 1-2 business days once we receive your payment.If you pay by e-check, we will ship your order once your payment is cleared. A shipping notification with tracking number will be emailed to you once your order has been shipped. Items will be sent as a gift to avoid customs duty.We are not responsible for any customs duty incurred at foreign customs.---------------------------------------------------------------------------------Payment We accept payment via paypal. Credit card payment can also be made via paypal.Please make your payment within 14 days after checkout.To expedite your order processing please include your order number and buyer name in all forms of p
Specifications Sport Bluetooth headset 1)Bluetooth V1.2 compliant for mobile phone or PC 2)Talk Time: Up to 4 hrs 3)Stand-by time:200 hrs High quality Sport Bluetooth headset, Bluetooth V2.1 Specifications:1.sport bluetooth headset 2.wireless 3.used for mobile phone,PC Product Description:100% Brand NewWeight: 118gOperating frequency range:2.402GHz~2.480GHzBluetooth V2.1 compliantRange of Wireless Connection: 10 metersTransmitting Power:Glass2Supports headset & handsfree profilesHeadphone with built-in chargeable 150mAH lithium batteryTalk Time: Up to 4 hoursStand-by time:200 hoursPerfect fusion of practicability and fashionMost fashionable Euramerican design with foldable eyeglass providing infinite fun of wireless hearing Stereo compression ratio
Brand Name: OEM Model Number: M9A Style: In-Ear Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Warranty: 1 year Talking Time: 6 Hours Transimission Distance: 10M Bluetooth Version: V2.1+EDR Packaging & Delivery Packaging Detail: Paper box with inner Blister Delivery Detail: 5~10days Specifications Wireless Stereo Bluetooth Headset Clip Model,superior Clear Voice Support HSP/HFP/A2DP CE,ROHS,FCC,UL and BQB Bluetooth Stereo Headset V79A Feartures: CE,ROHS,FCC,UL and BQB approvalExtremely good quality,superior clear voiceElegant and Fashion designStereo Bluetooth Headset,Bluetooth version 2.1+EDRSupports HSP and HFP profiles and A2DPRechargeable Battery:Li-ionLong talking time:range up 6 hoursExtremely Light:Only 9gColor:Black,Whte,Golden and SilverBluetooth Hansdfree,compatible with most Bluetooth Devices such as Mobile Phone,computer and PADAutomatic cennecting fu
Brand Name: xinqite Model Number: F233 Style: In-Ear Communication: Wireless Use: Mobile Phone Function: Bluetooth Place of Origin: Zhejiang China (Mainland) Packaging & Delivery Packaging Detail: Carton Delivery Detail: According to your order Specifications 1.Material:ABS+electronic elements 2.Size:2.5*1.5cm 3.Packing:Color+PVC Bluetooth headset Material:ABS+electronicSize:2.5*1.5cmWeight:59g Packing:color+PVCPacking:14*9*3.5cmPacking quantity:50 pcs per ctn Equipped with power charger and bluetooth headset hang
Brand Name: lg Model Number: hbs 730 Style: Ear Hook Communication: Wireless Connectors: Other Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: 25.6 x 17.6 x 4.8 cm Delivery Detail: 3-7days Specifications Enhanced Audio and Bass Response Noise Reduction/Echo Cancellation Advanced Multipoint Text to Speech LG Tone+ FeaturesTalk/Music Time: Up to 15/10 hoursBluetooth Version: 3.0Long Battery LifeMicrophone MuteaptX CompatibleAudible Battery Status AlertVibrating Call AlertText to SpeechAll Day Comfort Witness the enhanced audio and bass response of the next evolutionary step in the LG TONE family. Tone+ Wireless Stereo Headset delivers a high quality audio experience in stereo sound with the convenience of Bluetooth technology. Music and phone conversations sound better with enhanced audio and bass response that compliments a wide range of music genres. Built in apt-X technology reproduces CD quality sound over
Model Number: HC-BH29 Style: Ear Hook Communication: Wireless Use: Mobile Phone Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) weight:: 0.078kgs size:: 6x13x21cm packing:: blister packing MOQ:: 100 Operating range:: 10m LED Indicator Status :: Blue, Red charging Port:: Micro 5PIN USB Charger adapter Output :: DC 5V&200mA Talk time:: Up to 4.5 Hours Standby time:: Up to 120 hours Packaging & Delivery Packaging Detail: blister packing Delivery Detail: the same day we got your payment Specifications Ear-hook high quality sound bluetooth headset Dual-microphone CVC v5.0 achieves over 30dB dynamic noise suppression, products Description: Ear-hook high quality sound bluetooth headset KEY FEATURES:Dual-microphone CVC v5.0 achieves over 30dB dynamic noise suppression,highquality sound;echo and noise cancellation;Packet/bit error correction technology to improve audio quality due to airinterference;Operating range: 10M
Specifications stereo wireless bluetooth headphone Elegant Fashion Design High Acoustic Fidelity CE/RoHS wireless bluetooth headphone stereo wireless bluetooth headphoneElegant Fashion Design High Acoustic Fidelity CE/RoHSwireless bluetooth headphone stereo wireless bluetooth headphone Product Description1. Bluetooth headphone 2. 10m 360 degree range with no cords 3. Folding wireless headphone 4. Hidden omni-directional Microphone Wireless bluetooth headphones for laptop iPhone, Samsung, Nokia 1: Bluetooth 2.1 wireless transmission protocol 2: Transmission distance and range(10m, 360° ) 3: High SNR Bluetooth audio connection 4: No wire, no transmitter, no software, no setup, it is easy and fast. 5: Automatic Switch-over between calls and music 6: Hidden omni-directional Mircrophone 7: Low power indicater 8: Adjustable headband and folded 9: Working duration: 15h, charging duration: 4h 10: Headset Spec
Brand Name: SOASO Model Number: XY-HP-8004 Style: Headband Communication: Wireless Connectors: 3.5mm Use: MP3/MP4/PC/Mobilephone/all music devices Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) color: colorful design, can do any colors package: blister, gift box, white box, OEM services logo: can be customized any logo certifications: CE/ROHS/Phathalate/Reach/PAHs sound: high/low bass sound quality: tip-top quantity: as your request Packaging & Delivery Packaging Detail: gift box, Blister, PVC Window box, white box, Polybag Delivery Detail: 20-25 Days Specifications bluetooth headphone with mic 1. super bass sound 2. OEM package 3. CE/ROHS/Phathalate 4. And logo design bluetooth headphone with mic Specification: 1) frequency: 86MHz2) modulation mode: FM3) transmission range: 35 meters4) power supply: 2xAAA or 4.5V adaptor (to be purchased additionally)Receiver (headphone):1) frequency range: 84-108MHz
Specifications Bluetooth headset 1) Sales model : order or wholesale 2) Color:mix color 3) Size:4.3*20.5*13cm 4) Weight:0.083kg/pcs Bluetooth headset 1) Sales model : order or wholesale2) Color: as picture (mix color)3) Product size: 4.3*20.5*13cm 4) Product weight:0.083kg/pcs5) Material:ABS+ Electronic components 6) Function: Bluetooth headset 7) Packing:PVC box,48pcs/ctn8) Product condition: stock or order(we can produce for you according to your requirement)9)Payment: TT,Western union10) Please feel free to contact with us,if you have any questions. DescriptionTop quality; Competitive price; Fast shipping;Drop combined order shipping available;Best and Timely service; 100% satisfaction!1) We are supplier in Yiwu of china, You know that China’s work force are very famous,cheaper and quality is very rigorous,so lots of famous Brand Co., are choose china for a manufacture base,this is why China can have so many,these are not,j
Brand Name: SOMOTOR Model Number: LY-201 Style: Headband Communication: Wired Connectors: 3.5mm Use: Portable Media Player Function: Bluetooth,Waterproof,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) Raw Material: Approved by Rohs&CE Color: Various Service: OEM&ODM Products Status: Stock Packaging & Delivery Packaging Detail: Color box Delivery Detail: 30days after order confirmed Specifications 1.over-ear bluetooth headset 2.adjustable headphone 3.wireless light headset 4.Wireless, sport-style 2012 Hotest Fashionable Wireless Stereo Audio Bluetooth Headphone,OEM/ODM welcome Description: 1: Bluetooth 2.1 wireless transmission protocol
Specifications wireless/bluetooth headphone headphone,high definitio music/gaming, high comfort experience natuaral quality music Fashionable wireless/bluetooth headphone wireless/bluetooth headphone With it, creat a pure music world wherever you go!!!!!!! You cant just discount it for simply the following reasons: all the insanes of headphone tapping onto itamazing price and quality ratio you cant find elsewheretotally a masterpiece no matter the workmanship or designPopular in EU-US area,leading the latest trend of earphone field Specifications Plug3.5mmImpendance32Ohms+/-15%Sensitivity108dB +/-3dbFrequency20-20000HzCable1 music cable 1 mic cable.Speaker40mm diameterColoryellow, blue, green, Oringe, red, purple, pink Product characteristics OEM & ODM Project acceptableall the portable players compatible various colors for option black
Specifications 1.Support A2DP, AVRCP; 2.Smart connection; 3.Rechargeable battery system; 4..Built-in Mic. BLUETOOTH MP3 HEADPHONE E68 Function TF card support,bluetooth built-in, mp3, headphone, telephone, EQ Specification( bluetooth part)Bluetooth version: bluetooth V2.0.Transmitted power: Class 2(max 4 dBm)receive sensitivity: battery: rechargeable 460mAh Li-ion battery.power supply: DC5Vcontinuous talking time: over 15 hoursstandby time: about 240 hoursweight: 77gsize: 15*15*6.5mmoperation range: within 10 meters Specification(mp3 part)Audio format support: MP3/WMA/WAVExternal memory enlarge: TF card( Max 8G)Play time: continue about 10 hoursUSB Jack: USB 2.0Frequency response: 20Hz~20kHzOutput power: 15mW*15mWRecord sampling rate: 64Kbps/8KHzRecord format: WAV Hardware specification definitionSolution Transmit powerClass 2, Max4 dBmReception sensitivity-88dbm(typical)Working Band2.4G ISM Band,2
Brand Name: BYZ Model Number: BYZ-S300 Style: In-Ear Communication: Wired Connectors: 3.5mm Use: Mobile Phone Function: Noise Cancelling Place of Origin: Guangdong China (Mainland) Certificate:: CE, FCC sample:: one piece mini bluetooth headset colorful &headphones paypal for:: computer, mobilephone OEM:: Yes Leadtime:: 25-35days cable length:: 130cm speaker size:: 12mm Packaging Detail:: 1piece in a saling bag logo:: requested colors :: all king of colors are available Packaging & Delivery Packaging Detail: carton Delivery Detail: 10-15 days after payment Specifications mini bluetooth headset colorful &headphones paypal 1 Manufactory directly saling 2.High sound quality 3.Nice design mini bluetooth headset colorful &headphones paypal Model No.: BYZ-S300 Parameter: Speaker size 12mm Impedance32ohmSensitivity116±3dBmFrequency range 20-2khzFunctionNoising cancellingWiresFlat cableUsageMo
Specifications wireless bluetooth headphone 1.Frequency : 2.4GHz ISM band 2.Built-in 360 degree Omni direction microphone 3.OEM colorful wireless bluetooth Headphone 1.Bluetooth stereo headset lets you listen to music or phone calls wirelessly2.High-quality speakers deliver crisp,rich sound3.Accept incoming calls or toggle between tracks with the touch of a button4.Lightweight,comfortable design for all-day listening5.Compatible with bluetooth enable devices,such as iphone,ipad,most computers,cellphone6.Frequency response:20-20,000 Hz7.Speaker impedance:32 ohm8.Transfer Distance:33 FT/10M9.Frequancy:2.4GHz10.Technology: Bluetooth V3.0-EDR11.Play/Talk ~10 Hrs12.Omni-directional high quality microphone13.Easily charge via USB port14.Sensitivity microphone Model NoHS02Ver.Bluetooth V3.0+EDRBluetooth ProfilesHSP,HFP,A2DPK,AVRCPEffective Range10MetersMusic Time10HoursTalk Time11HoursStandby TimeUp to 250HoursInputDC:5V/180mAhCharge Time3HourDimensions14.5*10*6cm
Specifications New Universal Stereo Headset Wireless 1.MOQ: 100pcs 2. Be compatiable with any bluetooth enabled devices New Universal Stereo Headset Wireless Specifications of bluetooth: Bluetooth VersionV2.1 EDRTypeStereo headphone with internal micOperation Distance10mRange of Frequency2.4 to 2.4835GHz ISM bandSensitivity85dBPC InterfaceUSB2.0Music FormatMP3 at WMAStandby timeup to 200 hoursMusic Playing Time7 hoursNormal Charging TimeWithin 3 hoursBattery3.7V 300mA Rechargeable Li-PolymerPowerImput AC 100-240V, output DC 5V 300mARF Output Power-6dBm to 4dBmOperating temperature-10’C to +55’CSupportsBluetooth Headset, Handsfree, A2DP and AVRCP Profiles Features of bluetooth 1. Bluetooth Wireless Headphone with Micrphone2. Wireless chatting online(MSN, Skype, AIM, QQ...). Two-side real time wireless connection Motile, portable, Use for PC3. Build-in microphone4. Wireless operate the Music Player of PC
Brand Name: AEC Model Number: B-602 Style: Neckband Communication: Wireless Connectors: 3.5mm Use: Mobile Phone Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) Transmit Range: Within 10m Charing time: 1-2 hours Charge power: Input 110/220V 50/60 Hz 150mA Standby time: 200 hours Continuous playing time: 5-6 hours Packaging & Delivery Packaging Detail: Colorful Box, Blister and Card, OEM Package Delivery Detail: 10 working days for MOQ pcs Specifications Bluetooth Headset 1.OEM ODM Produce 2.CE ROHS FCC 3.Stereo Headphone 4.Factory Produce Sport Bluetooth Headset (B-602) 1. Soft and scratch-less material2. Fashionable and sport design,valued type leads wireless life style of Bluetooth Technology.3. Wireless enjoy stereo music 4. Support phone voice dialing function.compatibility with bluetooth headphone,MP3/MP4,dial and answer phone.5. Bluetooth version: V 3.06: Automatic Switch between calls and music.Can receive and reject incoming call
Specifications Bluetooth headphone v2.0,comatible with any bluetooth enabled mobile phones. 1) Bluetooth headphone.2) High capacity lion battery,200% longer talk time than normal bluetooth headsets.3) Bluetooth v2.0,compatibale with any bluetooth enabled mobile phones.4) Elegant, stylish, functional, comfortable, discrete, miniature, and super lightweight.5) Wear it with or without the flexible earhook; wear it for a long period, or wear it with the included lanyard for convenience.6) Total mobility!7) Superior, cutting-edge sound quality!8) High performance Lithium battery, long talk & standby time.9) Automatically searchable, the latest Bluetooth technology.10) BQB certified. 11) Operaing distance:up to 10 meters.12) Pack:plastic case.
Brand Name: mi.wow Style: In-Ear Communication: Wireless Connectors: 3.5mm Use: Aviation Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) color: black Packaging & Delivery Packaging Detail: Neutral packaging, plastic packaging, gift box Delivery Detail: 1-3days Specifications Hot Sale In Ear Bluetooth Headphone 1.Bluetooth Version: V2.0. 2.In-Ear Headphone. 3.Fast Delivery. 4.Welcome Inquiry. Hot Sale In Ear Bluetooth Headphone 1.Top Quality Bluetooth Headset with Microphone.2.High Defition bluetooth headset with impressive Hi-Fi sound.3.Can be easily connected to iphone,ipad,PC,cellphones etc.4.Remote playback control function:Answer call,End call, Redial,Voice Dial,Call Rejection.5.Enjoy talking with friends or business partners up to 3.5 hours. 6. Powered by long lasting, rechargeable lithium batteries. 7.Key Features: Volume /-,Pause/Play,Redial,Voice Dial,Call Rejection etc. 8.Impressive
Specifications bluetooth headphone & mp3 palyer 1.support fm radio 2.build in memory to display the music 3.stereo,bass top quality Wireless remote control bluetooth headphone & mp3 palyer words: Headphone,mp3 player,music player,fashion headphones,fm radio,bluetooth headset,bluetooth headphone wireless headphone,bluetooth earphone,mp3 speaker,wireless earphone for phone,fm headphone mp3. bluetooth headphone,wireless headphone,beats headphones,headphones beats,studio headphonesheadphones bluetooth,beats headphone from china factory,earphones and headphone,mp3 headphonein ear headphones,stereo headphone, headphones,memory card headphones,headphones with micheadphone amplifier,mini bluetooth headset,bluetooth earphone,mp3 player,music player,bluetooth headse
Brand Name: KS Model Number: kse-39 Style: Ear Hook Communication: Wired Use: Mobile Phone Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: 1000pcs per ploy bag or as your request. Delivery Detail: About 5-7 days after receiving your payment Specifications 2013 popular best ear plug headphones 1.silicone material 2.usage:headphone earphone 3.factory price cheaply new design ear plug stretchers 1.silicone material 2.usage:headphone earphone 3.factory price 4.comfortable to ear Specification: Material:Silicone Color:Black and yellow,or made as thepantone color you give Usage: For most typle brand headphone earphone.Blueteeth Size:Three sizes,Large,Medium,Small. Hardness:60 and 70 hardness or made as your request. Features: Eco-friendly,anti-dust, good elasticity,recycling,durable,tear-resistance. Test:FDA,LFGB,SGS,ROHS(The text will
Brand Name: YD Model Number: ZD001 Style: Headband Communication: Wireless Connectors: 3.5mm Use: Portable Media Player Function: Waterproof,Noise Cancelling Place of Origin: China (Mainland) Packaging & Delivery Packaging Detail: colorful box package Delivery Detail: 7DAYS Specifications Wireless Earphone Wireless Net Chat Tool FM Radio Wired Earphone Wireless Monitor This item will never dissatisfy you: 5-in-1 Multifunctions (Wireless Earphone + Wireless Net Chat Tool + FM Radio + Wired Earphone + Wireless Monitor), high sensitivity, interference resistance, strong signal, outstanding performance, effective range over 8m, and reception beyond obstacle of wall.Features:* Wireless Earphone:Wireless reception from any electrical device with audio output such as full-channel TV sound, PC, game player, DVD player, VCD player, audio device, MP3 player, and CD player. Full-channel TV sound: What will you do if there is your favorite TV program but you worry about disturbing others. Use of