Specifications bluetooth headphone 1)Extremely Competitive Price 2)Operating Distance:15m earmuff bluetooth headphone,An021 Features and specifications use the Internet to achieve long-range wireless two-way communication; wireless enjoy stereo music, set aside to answer the call automatically converted, high-fidelity, CD quality sound effects; remote control music playback status (remote control music playback, pause, up and down selections, volume control); High sensitivity, omni-directional microphone design, voice clarity, no echo;
Specifications Bluetooth Headset for all Mobile Phone/ Computer (White) 1.High quality,Assorted colors 2.Factory Price 3.Fast Delivery Bluetooth Headset for all Mobile Phone/ Computer (White) 1) Bluetooth head set lets you listen to music or take phone calls wirelessly. 2) High-quality speakers deliver crisp,rich sound. 3) Accept incoming calls or toggle vetween tracks with the touch of a button. 4) Lightweight,comfortable design for all-day listening. 5) Compatible with bluetooth enabled devices,such as most computers,cellphones,iPhone 3GS/4,iPad,iPod,and other MP3/MP4 players Earphone Specifications:Function for iPhone 4 & 4S, iPhone 3GS/3G, iPhone, iPod, MP3 fashion, precision, nice item.environmental, eco-friendly.CertificateROHS, SGS, CE.PackageBlister Packing or following customers request.Priceprovide the most competitive factory prices.Delivery timeapprox 7-10 days after sample approval.transportationSmall quantity: DHL/Fedex/UPS/TNT... Expres
Brand Name: hotom Model Number: hotom007 Style: Headband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Name: Bluetooth Stereo Headset Colour: White ,Red, black charging time: 2 hours horn diameter: 40 mm transmission range: more than 10 meters output power: Class II Packaging Details:: Stardard package Packaging & Delivery Packaging Detail: Stardard package Delivery Detail: 3-4days Specifications 1)Bluetooth4.0wireless headset. 2)Compatible with all Bluetooth A2DP enabled devicce 3)Working more than 24 hours in 30 mete cool HI-FI wireless floding bluetooth headphone for mobile phone bluetooth headset specifications 1) the battery 3.7 V / 500 mah lithium-ion polymer battery2 )calls (bluetooth) about 24 hours3 )music (bluetooth) about 24 hourS 4 )charging time: 2 hours5 )frequency response: 20-20 000 hz6 )horn:32 ohrn7) horn diameter:40 mm8 )bluetooth freque
Specifications Fashion Wireless Stereo Earmuff Bluetooth Headphone With Microphone BH18 1.Bluetooth version:V2.1,Class II Fashion Wireless Stereo Earmuff Bluetooth Headphone With Microphone BH18 ModelFashion Wireless Stereo Earmuff Bluetooth Headphone With Microphone BH18 ColorBlack+Silver/Black+RedBluetooth versionV2.1,Class IISupportHeadset,Headsfree,A2DP,AVRCPFrequency Band2.4GHz to 2.4835GHz,ISM BandPower Supply5V DC,100 to 240V AC adapterStandby time1200HoursTalk time54HoursUsedFor Tablet/Mobile phoneOEMWelcome
Brand Name: OEM Model Number: CH117 Style: In-Ear Communication: Wireless Connectors: USB Use: Portable Media Player Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) Name: mini wireless headphone Brand: oem&odm Sensitivity: -38dB+/-3dB Driver Diameter: 40mm Impedance: 32 oHm Frequency Response: 20Hz-20kHz Input Plug diameter: 3.5mm Cord meter: 2m Net weight: 300g Sample: sample is avialable Packaging & Delivery Packaging Detail: blister packing Delivery Detail: 10-15days Specifications 1, bluetooth headphones built in microphone 2,light weight .good feeling 3,Ergonomic ,slime disign 4,CE ,ROHS,FCC high quality sound bluetooth headphones built in microphone wireless headphones wireless headphoness wireless headphones wireless headphones wireless headphones wireless headphones wireless headphones &nb
Brand Name: Qosun Model Number: BT278 Style: Ear Hook Communication: Wireless Connectors: Bluetooth Use: Mobile Phone Function: Bluetooth Place of Origin: China (Mainland) Bluetooth version: 3.0 or V2.1 +EDR , Class II Packaging & Delivery Packaging Detail: Pcs/Ctn:100pcs/ctn Ctn size:45.5*34*35cm GW/NW:11.5kg/10.5kg Q'ty/20': 490ctns; Q'ty/40': 1045ctns Delivery Detail: 5-15 days upon receipt of your confirmation order Specifications bluetooth headset Bluetooth version 3.0 or V2.1 +EDR , Class II Bluetooth Profiles: HSP, HFP, A2DP and AVRCP bluetooth headsetBluetooth version 3.0 or V2.1 +EDR , Class II Bluetooth Profiles: HSP, HFP, A2DP and AVRCP Talk time&music playing time: up to 4.5 hrs Standby time: up to 70 hrs Charging time:less than 3 hrs Battery capacity: 90 mAh Operation distance:10 meters Chipse
Brand Name: BW Model Number: BW0205067 Style: Ear Hook Communication: Wireless Use: Portable Media Player Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Name: Small lightweight Bluetooth headphones for phone Model: BW 0205067 Color: black and red Trasmisssion distance: 10M Product size: 52*12*7mm Operating voltage: 3.6V Chargingtime: 2-3H Packaging & Delivery Packaging Detail: plastic box Delivery Detail: within 5-7 working days after payment arrived Specifications Small lightweight Bluetooth headphones for phone 1.Trasmisssion distance:10M. 2.Charging time:2-3H 3.Product size:52*12*7m Small lightweight Bluetooth headphones for phone Number:BW 0205067 Feature1.Small and compact in-the-ear design,supreme comfort and perfect fit.2.It can wear with removable ear hook for either ear .3.Bluetooth v2.1+ EDR compatibility.4.A giant leap in voice quality with 'Aurstream'.5.Speaker volume gian control.6.Supports bluetooth headset and handsfree pro
Brand Name: OEM Model Number: BH-02 Style: In-Ear Communication: Wireless Connectors: USB Use: Portable Media Player Function: Bluetooth Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: in blister card Delivery Detail: 1-3days Specifications Sport Wireless Stereo Headphones Bluetooth for mobile pc 1.convenient for sports 2.Built in Microphone 3.Built-in lithi Sport Wireless Stereo Headphones Bluetooth for mobile pc Features:100% Brand New and High QualityWireless appreciation in the mobile phone play the stereo musiclisten to the radio broadcast computer stereo musicUse the network to realize the remote wireless two-way conversationRadio listening to the stereo music, dial out, answer the call to be automatic conversionPortable back-hang design, convenient for sportsAllow you answer the phone anytime and anywhere Specifications:• Color: Black,red,blue,green• Buttons: Play/ Pause, VOL +, VO -, Call/ Receive•
Specifications 1.bluetooth headphones with speakers; 2.foldable&portable design; 3.3 in1 design; 4.PRV/NEXT/Play/Pause/Answer/Stop Calls; Unique Product Features:bluetooth headphones bluetooth headphones bluetooth headphones1. bluetooth headphones with speakers; 2. foldable & portable design; 3. multifunctionality; &nbs
Brand Name: OEM Model Number: AS-N97 Style: In-Ear,fashion Communication: Wireless Connectors: 3.5mm Use: Mobile Phone Function: Bluetooth,Noise Cancelling,bluetooth Place of Origin: Guangdong China (Mainland) purpose: OEM color: black distance: 10 meters certificate: CE,ROHS Packaging & Delivery Packaging Detail: Dimension:15.0*11.9*3.7cm weight/box: 104.60g product size: 49.7*16.2*23mm product weight: 8.1g OEM packaging or as the customer requirement Delivery Detail: 15~25 after order confirmed Specifications Wireless bluetooth headphone N97 1.Smart &cute design 2.Bluetooth and hands free function 3.Noise cancelling 4.OEM,CE&ROHS Wireless bluetooth headphone AS-N97 1.Bluetooth standard:V2.1 + EDR 2.compatible V1.0 V1.1 / V1.2 / V2.0 3.Transmission: class2 4.Working range:10M 5.Frequency range :2.4-2.48Ghz 6.Talk time :≥4 hrs7.Chargin
Specifications 2.4G wireless digital bluetooth headphone 300mA removable li-on battery Volume control Smooth ear shell Remote control 2.4G wireless digital bluetooth headphoneProduct Features2.4G wireless acoustic 20M transmission high-fidelity data active hopping data transfer and unique packaging and splicing agreement,2.4G comprehensive protection in a complex environment of anti-jamming capability,up to 20meters away from your computer of audio transmission.Removablehigh-performance rechargeable lithium battery with removable high-performance rechargeable lithium batteries,lithium batteries can replace the battery at any time,do not worry battery aging,it is same as cell phone lithium battery mode,you can always remove the standby charge and universal charge .LED lighting function keys integration of key design and turned blue glare display,two-way digital transmission wireless headset to control computer,remote control the computer player's
Brand Name: OEM Model Number: HB18-01 Style: Headband Communication: Wireless Connectors: 3.5mm Use: Computer Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Speaker: 40mm color: as your request logo: welcome Packaging & Delivery Packaging Detail: 1.blister package 2.white box/color box 3.custom carton Delivery Detail: 20days after you confirmed the order Specifications hot sell bluetooth headphones,black bluetooth headphone,bluetooth headphone manufacturers&suppliers&exporters cool bluetooth headphones,black bluetooth headphone,bluetooth headphone manufacturers&suppliers&exporters Description:1,wireless headphone 2,FM radio 3,wireless monitoring 4,microphone for net chat5 in 1 wireless headphonewhich works freely with PC,MP3,TV,MD,DVD etc;High Sensitivity, interference resistance, strong signal, outstanding performance, effective range over 8m, and reception beyond obstacle of wall. Bass speaker for great enjoyment
Brand Name: no brand Style: Ear Hook Function: Bluetooth Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: standard packing Delivery Detail: within 7 days upon receipt payment Specifications bluetooth handsfree/bluetooth earphone/bluetooth headphoneTalk Time:Up to 4 hours ,Standby Time:200 hours bluetooth handsfree/bluetooth earphone/bluetooth headphoneTalk Time:Up to 4 hours ,Standby Time:200 hours Charging time:2-3 hoursWork Range:3-15 metersWeight9gBlue Tooth Version:V1.2 Battery:Polymire BatteryColorBlack, WhiteDimension :38*16*6mmAccessoriesBluetooth headsets/ charger /manual
Specifications 1.Chipset:CSR/BC352239A 2.Bluetooth version: Version2.0/Class2 3.Operating Distance:10 Meters 4.Ran 1.Chipset:CSR/BC352239A 2.Bluetooth version: Version2.0/Class2 3.Operating Distance:10 Meters 4.Range of Frequency: 2.4GHz-2.4835GHz ISM Band 5.Operating Rang: Up to 10 Meters 6.Typical Talk Time: 8 hours 7.Typical Standby Time: 160 hours 8.Rx sensitivity < -80 dBm (PER 1 %) 9.Rechargeable Li battery:160MAH 10.Compatible with various Bluetooth enabled devices such as mobile phones, PDAs and Laptops
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 Mono headset bluetooth headphones CD-615 factory price small and exquisite Mono headset Mono headset bluetooth headphones CD-615 It is a lightweight and comfortable stereo headset with a unique design and fashionable style. It has full metal body construction and its Bluetooth ringtone answering function allows headset to ring for incoming calls. You can make a direct phone call from your headset to most recent call by its recent call re-dial function. Moreover you can just push send button for a second to hold incoming calls, push it again to get back. When you listening to music, it will let you know your incoming calls by strong vibrating (as your cell phone's) from one side. Provides up to 5 hours talk time or 200 hours standby Specification: Mono headset Bluetooth version: V2.1+EDR Bluetooth model: Hands free/ Headset/ AV/ AV PCR profile Radio frequency: 2.4GHz
Brand Name: baoyi Model Number: BY-011S Style: Headband Communication: Wireless Use: Portable Media Player Function: Bluetooth Place of Origin: Guangdong China (Mainland) color: black Specifications 1. Noise Reduction Stereo Headphone, 2. Professional Hi-Fi Stereo Headphone, 3. Premium design Headphone 4.low MOQ ptional color: black, whiteMixer MP3 / FM functionHigh-fidelity stereo speakers, with heavy bassPieces to support 64 MB memory function - 32 gb TF cardPieces with PC and TV FM transmitterHeadphones built-in high capacity lithium batteries, transmitter built-in lithium battery, chargingComputer headset, wireless distance up to 30 m, a receiver can connect multiple headphones
Brand Name: OEM Model Number: JDD2 Style: Ear Hook Communication: Wireless Use: Mobile Phone Function: Bluetooth Place of Origin: China (Mainland) Bluetooth specification: bluetooth V2.0 + EDR Support agreement: A2DP, Handsfree Transmission range: 3-5 m transmission Applicable models: all kinds of phone stereo: yes Standby time: 160 hours dual MIC noise reduction: yes warranty: 1 year Packaging & Delivery Packaging Detail: gift packing Delivery Detail: 1-3DAYS Specifications bluetooth headset bluetooth V2.0 + EDR 3-5 m transmission compatible all kinds of phones stereo:no bluetooth Model JDD2 Specification Bluetooth specification: bluetooth V2.0 + EDRFunction purpose: bluetooth headsetSupport agreement: A2DP, HandsfreeTransmission range: 3-5 m transmission frequency: 2.4 GHzApplicable models: all kinds of mainstream mobile phone modelsstereo:NoWeight: 9.8 gTime: 6 hoursStandby time: 160 hoursCell size: 401030Transmission power: class 2Product size: 4.5 * 1.5 * 1 comPacking
Brand Name: YOUNGREEN OR OEM Model Number: BTS-0501N Style: Neckband Communication: Wireless Connectors: USB Use: Mobilephone,Laptop etc Function: Bluetooth,Waterproof,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) Name: Neckband Bluetooth Headphone Certification of Bluetooth Headset: CE / ROHS/BQB/FCC Bluetooth Protocol: A2DP/AVRCP/HFP/HSP Bluetooth version: V2.1+EDR Color: Red,Blue,Pink,Black, Purple(Color and logo customized) Talking time of bluetooth headsets: More than 5 hours Standby time of bluetooth headsets: More than 30 hours bluetooth headsetsransmission Distance: About 10M Dimensions: 15*10*5.5cm(For gift box) Approx Weight of Bluetooth Headset: 44g Packaging & Delivery Packaging Detail: Gift Box Packing For Neckband Bluetooth Headphone - Gift Box Size: 15*10*5.5cm - Quantity of foldable neckband headset: 40Pcs/Carton - N. W.: 44G G. W.: 175G - Carton size: 39.5*29*32cm -Colors:Red,Blue,Pink,Black, Purple(Color and logo customized) Delivery Detail:
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 a Bluetooth connection when Tone+ is paired with a source device that supports it. Music retains its full digital integrity, and speech sounds more natural. Unique in shape. Ultimate in sound. Tone+ is uniquely designed for comfortable all-day wear—i
Brand Name: Sunvision Model Number: SVS-HP-WL07 Style: Headband Communication: Wireless Connectors: usb, mobile phone, computer Use: studio DJ Function: Bluetooth,Microphone Place of Origin: Guangdong China (Mainland) System: VHF/ RF Modulation:: FM Mode: Mono Speaker: 27mm mylar Packaging & Delivery Packaging Detail: colorful box package(OEM package) Delivery Detail: sample 3-7days, leadtime is depending on your order quantity. Specifications Wireless headphone for PC &TV, OEM,ODM high quality Multimedia headphone from china factory, colorful 5 in 1 wireless headphone, high quallity bluetoothheadphone Specification: System:VHF/RFModulation:FM Mode:MonoOperation distance>30meters(360 degree)Signal-to-Noise Radio>50dbDistortion<2%THDSpeaker:27mm mylarFrequency Response:20-20000HzTransmission Frequency:86MHz ±0.5MHzReceiving Frequency:84-108MHz(±0.5MHz)Power Supply Headphone:3V(2*1.5V AAA batteries) Transmitter:3V(2*1.5V AAA batter
Brand Name: Meidio Model Number: MA-960 Style: Headband Communication: Wireless Connectors: USB Use: Portable Media Player,SD,TF,FM Function: Bluetooth,Waterproof,Noise Cancelling,Waterproof, Noise Cancelling Place of Origin: Guangdong China (Mainland) Sensitivity: >90dB Mic frequency range: 20Hz-20KHz Other models available: MP3,WMA,WAV Company: TUV manufacturer Service: ODM,OEM Packaging & Delivery Packaging Detail: NW:7.8KGS GW:9.0KGS Quantity:40PCS/CTN mess:55.5*43.5*28CM Delivery Detail: 7-15 days Specifications SD/TF card headphones wireless with fm radio brand new factory price fast delivery odm oem service welcomed 2012 New fashion hot pink and black Bluetooth headphone wireless headset headphone Sensitivity:>90dB Mic frequency range:20Hz~20KHz Style: Headband Communication: Wireless Connectors: USB Use: SD,FT,FMFunction: Waterproof, Noise Cancelling other model available:MP3,WMA,WAV
Specifications 1. wireless bluetooth headsets bh503 for mobile phones 2. high quality and best prices 3. one year warranty Stereo NK bh503 bluetooth headset Description:wireless bluetooth headsets bh503 for mobile phones - for excellent audio quality, great wearability and laid-back design, lets you lose yourself in the music knowing you won't miss a call.With a Bluetooth Stereo Headset BH-503 you can:Enjoy high-quality stereo sound streamed from your compatible phoneStay comfortably in style with over the ear design and an easygoing neckbandControl the music player and manage your calls with the media keysSave time with fast charging Features:Weight: 70gDimensions: 150x75x155mmTalk Time: up to 11hMusic Time: up to 11hStandby Time: up to 210hInterfaces: Bluetooth 2.0 with EDRAdvanced Audio Distribution ProfileAudio Video Remote Control ProfileOperating Range: up to 10m
Specifications Bluetooth Headphone 1.bulit-in microphone 2.Overstuffed leather 3.Adjustable ,folding design 4.Active noise cancellation Features:Hands-free Stereo Sound, compatible with iphone,ipod, android, MP3 audio players, tablets, computers and other bluetooth enabled devices.Built-in MicrophoneRechargable Battery, Usage time:up to 10-11 hours (fully charged), Approximately 3 hours charge timeAdjustable ,folding head band2X 2 speakers USB charging cable includedBluetooth Version: 2.0Bluetooth Profile: a2dp, avrcp,hsp,,hfpEffective range of 32 feets (10M).USB charging cable included Aux in function Item No.:FWBT-08-OrangeDescription:BLUETOOTH HEADPHONEColor:Black ,White, Orange, GreenUnit Weight:2.8KGSUnit Size:190(H)x180(W)x32mm(D)Solution & pick up: Certification:According to customer's requirementValid Period:one monthMinimum Quantity:900pcsPayment term:30% deposit and T/T balance before shipmentLeadtime:60days for 1st order, 45days for repeat orders.Exclusive Mark
Brand Name: no Model Number: RF841172 Style: Headband Communication: Wireless Connectors: USB Use: iphone,ipad,most computers,cellphone Function: Bluetooth Place of Origin: Guangdong China (Mainland) Color: Red Black Yellow Pink White Blue etc. Packaging & Delivery Packaging Detail: color box white box polybag Delivery Detail: 30 days after sample approved Specifications 1. Bluetooth stereo headset 2. High-quality speakers 3. Frequency:20-20,000 Hz 4. Impedance:32 ohm 5. Play/Talk ~10 Hrs Specifications: Bluetooth stereo headset lets you listen to music or phone calls wirelessly High-quality speakers deliver crisp,rich sound Accept incoming calls or toggle between tracks with the touch of a button Lightweight,comfortable design for all-day listening Compatible with bluetooth enable devices,such as iphone,ipad,most computers,cellphone Frequency response:20-20,000 Hz Speaker impedance:32 ohm Transfer Distance:33 FT/10M Frequancy:2.4GHz Technology: Bluetooth V3.0-EDR Play/Talk
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
Specifications 2012 new noise cancelling bluetooth headphone 1. CSR chip 2. connect 2 phones 1 time 3. play music 4. work with mobile,PSP e Item:2012 new noise cancelling bluetooth headphone Why buy from us?--1. OEM orders are welcome--2. Wholesale,Retail order acceptable.--3. Mixed order/color acceptable.--4. Fast delivery time--5. Sample available.--6. Shipment by DHL,EMS,UPS,FEDEX,China/HK post airmail to all over the world--7. Drop shipping offered.--8. Payment accept T/T, Paypal, Western Union, Escrow etc. Main Specifications: Name: Multimedia bluetooth stereo headsetType: Bluetooth clip-on stereo headset 1. Travel charger: DC 5v 220mA2. USB charger USB +5V3. Battery Voltage: 3.7V high capability rechargeable lithium polymer batter4. product standard, class 2 Operation5. Talk time: 5.5 hours6. Standby time: 80hours Pictures for your reference: How to connect 2 cell phones in 1 time? Welco
Specifications Hi-Fi Stereo Bluetooth Headphone BluetoothV3.0+EDR 200Hours Standby Time Rechargeable Battery Neckband Design New Design Portable Hi-Fi Stereo Bluetooth Headphone BT-968 Product Features* Hi-Fi Stereo sound quality* Portable light weight neckband design, easy operating* Strong anti-interference ability,high fidelity* Suitable for any mobile phone or pc with bluetooth functions*Colorful appearance design Specifications Audio Frequency Response40Hz~18KHz Output Power25dBmS/N≥90dBSpeaker2xØ30mm Operating Voltage DC 3.7V Operating Curret 25mA Carrier Frequency 2.4GHz GFSK Hold Time 15 Hours Music Playing 12 Hours Protocol Standard Bluetooth V3.0+EDR Standby Time 200 Hours Above Battery3.7V/320mAh rechargeable Li-ion battery Charging Time 2~3.5 Hours Operating Distance≤10mPackageblister+paper card BT-968A BT-968B BT-968C Contact person:CindyMobile:+86-13927448174
Specifications 1) Stereo Four Channels sound Bluetooth Headset 2) Multi Connection HF710 3) New Wireless bluetooth Headset 1) Stereo Four Channels sound Bluetooth Headset 2) Multi Connection HF710 3) New Wireless bluetooth Headset 4) Most Advanced & high definition YET5) Bluetooth Version: V4.0 EDR Class II6) Frequency:2.4ghz-2.48ghz7) Profile suported: AVRCP A2DP Headset Hadsfree8) Chipset: CSR BCB6459) Operation Range:>10meters10) Talking time: >7hrs11) Music Playing time>5hrs12) Stand by time: >220hrs13) with CF ROHS etc certificate