Brand Name: Willong Model Number: EARN0765 Style: Ear Hook Communication: Wireless Connectors: 3.5mm Use: Portable Media Player Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) color: white type: bluetooth Standard: V2.0/V2.1+EDR Button/Switch: Multi-Function Button, Volume Up/Down Call duration: 2 hours Standby time: 100 hours Battery specifications: Lithium-ion polymer battery 041515 45mA Colours: silvery + black, golden + black Packing: Neutral colour box, OEM packing Frequency Range: 2402-2480MH Packaging & Delivery Packaging Detail: 1pc/PE bag paper case /plastic case Delivery Detail: 3days-7days Specifications bluetooth headphone 1.type:ear hook 2.function:stereo and bluetooth 3.Standard:V2.0/V2.1+EDR CE/RHOS/FCC willong quality worth to rely on !!! unbelievable design!!! fish spear bluetooth headphones with ear hook &n
Specifications 1. Bluetooth with mic 2. Noise canceling 3. Original quality with all accessoriess 4. For iphone Stereo wireless headphones : wireless headphone wireless earplug headphones Color : black / white / red / green / blue / purple Here we have all series of these headphones and earphones , please send me email to ask for the catalog ! ! ! What's In The Box • Wireless headphones • Touring case • Micro USB charging cable • Clean Cloth with advanced Aegis Microbe Shield technology
Specifications Wireless Headphone 1. 2 Years Warranty 2. Fashion Design 3. OEM
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 A+++ quality,brand new,box packaging,factory price,good service,many different designs and model available,fast delivery!!! Dear friends,the products have logo and the products are in sealed box,if you are interested,please contact us,thanks!
Specifications Supper mini Stereo bluetooth headset for mobile phone Best quality,Best price,Best service OEM/ODM Specification:1.Innovation earbud design , concise ,fashion ,comfortable 2.Compact size for easy carrying 3.Stereo great sound quality and good response4.Automatic connecting function , multipoint connection 2013 newest V3.0 stereo bluetooth headset for smart phoneFeatures:1 .Ultra Slim and Ultra Smart Design. it is look 3mm thin.2. Innovation earbud design, Pick it to wear and talk directly, save the hook.3. Support A2DP output, enjoy music from Smart phone or MID.4.Multipoint connection, Keep 2 devices linking at same while.5.Echo cancellation and wind noise Reduction, Keep talk clearly anytime.6.Long time Standby time, 60mha Li-polymer battery.7.Adjust voice, Extra plus the key to control volume.8.Easy Charging, Universal Micro usb 5pin for charger adapter Product spec: Model Number:CoteBH006Support profile:Headset, Hands-stereo Support
Specifications wireless bluetooth headset 1.comfortable to wear 2.clear sound quality 3.neck band style 4.sports wireless bluetooth headset Features and SpecificationsStereo Audio Wireless Bluetooth Headset Headphone for Mobile Phone PC Bluetooth headset lets you listen to music or take phone calls wirelesslyHigh-quality speakers deliver crisp, rich sound and deep bassAccept incoming calls or toggle between tracks with the touch of a buttonLightweight, comfortable design for all-day listeningSpecification:Stereo AudioBluetooth Version: 2.1Working Distance Range: 10M /30FTFrequency Range: 2.4GHz ISMRechargeable Battery: Lithium polymerCharge Time: ≤ 3 hoursWorking Time: ≥ 10 hoursCompatible with:Bluetooth enabled devices, such as most computers, cellphones, with iPhone 3GS/4, with iPad / iPod and Other MP3/MP4 playersPackage includes:1 x Stereo Audio Wireless Bluetooth Headset Headphone for Mobile Phone PC1 x Operation Manual1 x mini USB charging cable(length:68cm)
Brand Name: no brand Model Number: gxwy1 Style: Ear Hook Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) Color: As the pictures Shipping time: 1-3 days Shipping method: UPS,Fedex,DHL,EMS and so on Payment method: T/T,Western Union Waranty: 2 years Sample: Available Packaging & Delivery Packaging Detail: according to your requirement Delivery Detail: 1-3 days Specifications bluetooth earphone 1.High quality and low price 2.OEM logo and package 3.CE/RoHS 4.Soft wearing design bluetooth headphones with high quality Hot Sell Design,Competitive Price Feartures: Bluetooth Version V3.0+EDRExtremely good quality,superior clear voiceHandsfree,compatible with all Bluetooth Devices Such As PS3 & IPHONEHigh Capacity&Rechargeable Lion BatteryAutomatic cennecting functionEnergy saving function,200% longer talk timHandsfree,answer/reject call and call the last coming NO.Voice Dialing,Re-dialing fu
Specifications 1.Newest Stereo Wireless Bluetooth Earphone/Bluetooth headphones 2.Rich color can be choose Newest Stereo Wireless Bluetooth Earphone/Bluetooth headphones--P-EARPHONE013 Specifications: Bluetooth Version: 2.1 + EDRWorking Distance : Up to 10 metersFrequency response : 20~20k(Hz)Frequency: 2.4GHz Impedance: 32Ω Battery: 3.7V 180mAh USB Input Voltage5VPlaying time8 hoursTalking time10 hours Capabil
Specifications 1.NEW bluetooth stereo headset 2.Bluetooth 2.1+EDR 3.FCC,CE,BQB,RoHS 4.Available range:10m 5.A2DP,AVRCP 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 200hoursMusic Playing Time10 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,HFP,HSP, A2DP and AVRCP Profiles Features of bluetooth: 1,Top Quality Blutooth Headset with Microphone.2.High Defition bluetooth headset with impressive bass sound.3.Can be easily connected to iphone,ipad,PC,cellphones e
Specifications stereo bluetooth headphone 1.Handsfree Headset,compatible with any phones 2.Removable ear-hook fits either ears 3.CE,ROhs stereo bluetooth headphone. Feartures: CE,ROHS,FCC approvalBluetooth Version 2.1+EDRNoise Cancelling Functiongood quality,superior clear voiceErgonomic and Fashion designRemovable ear-hook fits either earsBluetooth Handsfree Headset,compatible with any mobile phoneHigh Capacity&Rechargeable BatteryAutomatic cennecting functionEnergy saving function,200% longer talk timHandsfree,answer/reject call and call the last coming NO.Voice Dialing,Re-dialing function.Technical Parameter: Frequency range:2.4GHz-2.48GHzTransmission power:class2Transmission distance:10MOperating voltage:3.6VOperating current:≤35mAStandby current:≤2mACharger power:Input 100~240V AC,Output 5V DCWorking temperature:-20°C~60°CCharging temperature:0°C~45°CCharging time:2 hoursStandby time:120 hours
Specifications Unique mono bluetooth headphone Series 1 High quality 2 Low cost 3 CE, FCC, RoHS BQB 4 Patented Products Specifications: Unique mono bluetooth headphone Series 1 High quality 2 Low cost 3 CE, FCC, RoHS BQB 4 Patented Products Main Features:1 High quality2 Low cost 3 CE, FCC, RoHS, BQB approval4 Patented Products5 Supports iPhone,iPad,Skype,MSN 1) Crystal clear and high quality voice for both talking party, noise cancellation, no echo2) Changeable faceplate style (BH006)3) CE (R&TTE, including EMC, LVD AND RF), FCC and RoHS certificate available4) Different packing to choose, OEM logo printing, manual,&
Brand Name: delightbuy Model Number: DB-BT003 Style: In-Ear Communication: Wireless Connectors: 3.5mm Use: Mobile Phone Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) color: black Packaging & Delivery Packaging Detail: color box Delivery Detail: 1-5 days Specifications Universal Bluetooth supported cell phones 3G Wireless Bluetooth Headset K3 Black ught notesAttributeGoods Tagfor Apple iPhone 4S 4 4G 3GS 3G Wireless Bluetooth Headset K3 BlackFeatures: 100% Brand new Universal compatible with Bluetooth supported cell phones Dimension: 5.3cm X 1.3cm X 0.6cm Light weight: 6 gram makes you forget even you are wearing it HSP & HFP supported Crystal clear communication Bluetooth version: V2.0, V2.1 Freq
Brand Name: Branded Model Number: 9 High Definition Style: Neckband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) -: - Packaging & Delivery Packaging Detail: Weight: 32 grams Dimensions: 126mm x 130mm x 48mm Design: Ear-bud Colours: Red, White, Black Delivery Detail: 7-10 business days Specifications Bluetooth Headset: Compatible with A2DP and AVRCP2 mobile phones Weight: 32 gramsDimensions: 126mm x 130mm x 48mmDesign: Ear-budColours: Red, White, BlackHardware /DevicesStandby Time: up to 144 hoursTalk Time: up to 420 minutesBattery Type: 180 mAh lithium-ion rechargeable batteryCharging Time: up to 2 hoursCharger: YesBluetooth Version: ver 2.0Noise cancellation: YesOthers: Other Devices: Number of button: 4On/Off
Style: In-Ear,In-ear Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) Usage: Mobile Phone Specifications Bluetooth Headsets Bluetooth HeadsetsOffer Group:Offer Post Time:2008-05-13Expiration Date:2008-12-28Details:Bluetooth Earphone/ Bluetooth Headset/ Wireless Earphone(KD-BH008): Bluetooth version: V1.2 Operating Distance: 10 Metres Weight: 10 grams Range of Frequency: 2.4GHz Spectrum Dimension: 43mm X 23mm X13mm Talk time: 8 hours talk-time Standby time: 200 hours Nominal charging time: Within 3 hours Ear compatibility - Adjustable for both left and right ear. Rechargeable Li-ion ploymer battery.
Specifications 1. Bluetooth mobile phone and PDA 2.Bluetooth music devices 3.Easy to switch between Stereo Bluetooth Headphone Music or Phone Calls Stereo Bluetooth Headphone Descripition: Specifications:Bluetooth version:Bluetooth V2.1+EDR (SUPPORT: HSP, HFP, A2DP and AVRCP )Key:Volume up/down,Song last/next,MFB pair/pick/hang/recallEffective range:10 meters Working time:Music:Up to 10 hours,Talk:Up to 11hours Standby time:Up to 250 hoursInput:DC:5V/130mACharging time:Approx 3 hoursMicrophone:Bulid-inRechargable:USB mini 5 pin cableBH-02 is a stereo Bluetooth headset. It supports the following Bluetooth profiles: HSP —— Headset Profile HFP —— Hands-free Profile A2DP—— Advanced Audio Distribution Profile AVRCP——Audio/Video Remote Control ProfileYou can enjoy music and hand free talk wirelessly by using BH-02.function:1) Pairing with the Bluetooth mobile phone and PDA (such iPhone) which support HFP. Ans
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 Bluetooth Headset Super Tone Quality Lower price Exclusive private mode Your best Choice Bluetooth stereo headphone Bluetooth V3.0, class II 3.5mm audio cable+micro USB port wireless&wirled Bluetooth in one Feature : * Bluetooth V3.0, class II* Up to 15 meters in working distance (open space)* Bluetooth profiles: A2DP1.2/AVRCP1.0/HSP/HFP* up to 14 hours talk time* up to 11 hours music playback time* up to 6 days standby time* Voice recognition for true handsfree by saying 'Answer' to answer the call and 'Ignore' to reject the call.Voice prompt in 5 languages: English, Spanish, German, French, Chinese* Multipoint: Supports 2 phones connectionBattery meter on iPhone* Support 3.5mm line-in for use in case of out of power.* Support VOIP, connect with computer for online chat.* Vice dialing/Redialing* Product dimension: D4.0mm X 1.5mm* Weight: 147g packaging: Paper box: 1 X AC charger 1&
Specifications Bluetooth headset for iphone4 Metallic earphone for mobile phones Stereo Wireless Bluetooth headset for iphone4Specification* Bluetooth V2.1+EDR* Chipset: CSR BC05-Multimedia Single Chip* Support profiles: Headset, Handsfree, A2DP, AVRCP* Operation range: Class 2, 10 meters* Up to 9hrs talk time, 8hrs music time* Standby time: Up to 16 days* Weigh: 23g (light)* Size: 85mm(L)x72mm(W)X25.5mm(H)* Battery: 170mA rechargeable lithium batteryFunction* Switch on/off * Pairing* Answer/end / reject a call* Call redial, Voice dialing, call waiting* Mute,Volume adjustment* Transfer a call between mobile and headset* Seemlessly transfer between the call and music* Multi-pairing with up to 7 Bluetooth Devices
Specifications 1.BH503 Neckband Bluetooth Headphone 2.Bluetooth V2.1 EDR 3.Stereo Bluetooth Headset 4.Noise cancelling/Microphone Bluetooth Stereo Headphone For Nokia,For Iphone,For Samsung Mobile Phone The BH503 Wireless Bluetooth Sports Headset is a cut above the rest. With its lightweight, sweat resistant, and user intuitive design, the BH503 allows you to walk, run, play sports, and even dance to your favorite music while never missing an incoming call! The BH503 features an ergonomic neckband for optimum comfort and call easy touch functions including play/pause, call mute, volume and track control. With the best in class echo and noise cancellation technology, the BH503 delivers crystal clear conversations and superior audio quality through any Bluetooth enabled mobile phone, computer, or music player while on the go. features CE,ROHS,FCC and BQB ApprovalSupports A2DP AVRCP, HSP and HFPEnjoy stereo music from coputer and mobileExtre
Brand Name: Avantree Model Number: BTHS-849-BLK Style: Headband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) Specifications 1. high quality for music and calls 2. 18 hours music time 3. Wired option for low battery use 4. comfortable wearing Avantree Hive is a Bluetooth stereo headphone with MIC from the Avantree family. It delivers clear voice transmission for phone calls and high quality sound for music. And with 3.5mm audio jack, it provides corded option for non Bluetooth-enabled phones, MP3 players, etc. The Avantree Hive is stylish and comfortable for all-day comfortable use. * Bluetooth stereo headohone with mic* Enjoy wireless music and answer phones calls in crystal clear stereo sound.* Corded option for non Bluetooth-enabled phones, MP3 etc.* Long working time - up to 18 hours music / talk time.* Auto-connection, easy to use.* Comfortable wearing and secure ca
Brand Name: Shuerr Model Number: SER-HEB-021 Style: Headband Communication: Wireless Connectors: No Plug Use: DJ Function: Bluetooth,Noise Cancelling,Microphone,DJ Headphones, Computer, Mobile Phones, Skype, Mediaplayer Place of Origin: Guangdong China (Mainland) Color of the headband: Can be customized as Pantone Color Raw material of the headband: Plastic & ABS Leather Sheath: Can be customized as different level Logo Imprints: Can be printed on headband OEM Service: Is available Shape of the plastic casing: Can be square Usage: Computer, Portable Media Player, Mobile Phones, Smart Phones,etc Connection Plug: Nickel Electroplating or Gold Electroplating Certificate: CE, Rohs, FCC(if required) Packaging & Delivery Packaging Detail: PE Bag,Gift Paper Box,Plastic Case or other customized package Delivery Detail: About 25-30 days against you confirm the approval samples Specifications Wireless Headset Bluetooth Headphone 1.Excellent bass sound 2.Color can be customized 3.OEM is avai
Brand Name: OEM Model Number: Y-3145 Style: In-Ear Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: standard package Delivery Detail: 3-5 days upon receipt of the payment Specifications Mini USB IN Built-in lithium battery (charged via USB) Built in Microphone for Handsfree Cell Phone use Sports Wireless Bluetooth Headset Headphone Earphone 4 colors This Bluetooth not listen to music for your phone ,it just call and answer for mostly phone! it just listen to music for series phone !hope you know this before you buy it! •Easy to use•Portable back-hang design, convenient for sports•Allow you answer the phone anytime and anywhere•Suitable for phone or pcSpecifications:•Buttons: Play/ Pause, VOL +, VO -, Call/ Receive•Talk time: 4 hours•Standby time: 100 hours•Dimension: About 14.5 x 13.5 cm•Mini USB IN•Buil
Specifications 1.high-definition surround sound 2.noise-isolating ear buds 3.Low price from Factory... Function: Bluetooth Sport Stereo Wireless Bluetooth Headset Headphone For iPhone 4 4s Features:Switch from music to calls with the press of a button Integrated touch sensitive controls Behind-the wearing style helps provide a comfortable and stable fit Water and sweat resistant Enjoy up to approximately 4 hours music listening, 4 hours talk or 6 days standby time from a single charge 160 mAh lithium-ion rechargeable battery Version 2.0 Bluetooth wireless technology for better call quality, less interference and faster connections Class 2 Bluetooth wireless technology range up to 10 m (33 ft) Mini USB connector for charging Specifications:1. Bluetooth version: Version2.0/Class2 2. Operating Distance: 10 Meters 3. Range of Frequency: 2.4GHz-2.4835GHz ISM Band 4. Operating Rang: Up to 10 Meters 5. Typical Talk Time: 4 hours 6. Typical Standby Time: 160 hours
Specifications Excellent sound quality with BC6130 V2.1+EDR -Bluetooth headset with digital recording-Records incoming and outgoing calls-Record voice memos-Store multiple recordings, up to 10 minutes-Record, play, skip, delete, and delete all functions-Recording audio indication-Memory full audio indication-Perfect for truckers, restaurants, and on-the-go business functionsSpecifications:-Working range: up to 10m-Bluetooth version: V2.1 + EDR -Blocks 4 times the external noise-Multi-point supported: 2 connections simultaneously-Simple pairing support-Maximum talk time: 6 hours-Maximum standby time: 150 hours-Headset to handset transfer-Comfortable over-the-head profile-Flexible swivel boom microphone for left or right ear-Volume adjustment-Low battery LED and audio indication-Attractive rubber coated designAccessory: -USB charger (optional)-USB charging line-User's guide
Model Number: 75-07314-039 Style: In-Ear Communication: Wireless Use: Portable Media Player Function: Bluetooth Place of Origin: Guangdong China (Mainland) Color: black Talk time: 5 hours Standby time: 90 hours Transmission distance: 10M Specifications 1.Mini Cool Bluetooth Headphone 2.Black 3.Bluetooth V2.1 4.Talk time: 5 hours ProductMini Cool Wireless Bluetooth HeadphoneProduct Highlight1. The mini Bluetooth headphone supports Headset Profile and Handfree Profile.2. Last number redial, call rejection and adjust volume, etc.3. Through the use of Bluetooth wireless transmitter, the Bluetooth headphone makes online chat reality.4. Cell phone loss protection, call note.5. With stylish design, the mini Bluetooth headphone functions as an ornament.6. Application: The mini Bluetooth headphone, a type of wireless products, offers compatibility with all famous branded Bluetooth cell phone and is used as a handsfree. Coupled with a Bluetooth dongle, it makes online voice chat a areality.Spec
Specifications 1. Headphone with Leather earpad, more comfortable 2. Music heaphone with High-Fidelity, 3. Headset with Foldable design Fashion design DJ headset for smart phones branded bluetooth headphones Key specifications:Bluetooth specification: V2.1+EDRBluetooth profiles: HSP, HFP, A2DP and AVRCPOperating distance: 10 meters Class IIRechargeable 430 mAH Li-polymer batteryTalk time: Up to 16 hoursMusic playing time: Up to 14 hoursCharging time: About 3 hours Special features:Folding and retractable design, easy to take with you.Enjoy stereo music wirelessly from Bluetooth A2DP devices.Embedded microphone for hands-free conversation from Bluetooth-enabled cell phones.When receives an incoming call, the music will pause automatically.Easy controls for mute, call transfer, voice dial and call answer/end/reject.Support remote control of play/pause, previous/next track, volume up and volume down.Automatically connect to the last connected Bluetooth device.Micr
Specifications Bluetooth 2.1 wireless transmission protocol High SNR Bluetooth audio connection Switch-over between calls and music Description: Bluetooth headset 1: Bluetooth 2.1 wireless transmission protocol &nbs
Brand Name: XJWD Model Number: HS1800 Style: Headband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Microphone Place of Origin: Guangdong China (Mainland) Bluetooth Version: V2.1+EDR Support: HSF,AVRCP,A2DP Talking time: up to 7hours Music time: up to 7 hours Standby time: up to 200 hours Available in: Windows IOS Android Color: Black\Blue\White\Red Warranty: 1 Year Accept: OEM Packaging & Delivery Packaging Detail: Packing details: color box & pvc packiing; Carton Size: 81.5*36*49.5cm; 30pcs in a carton; 20" : 6,000pcs. Delivery Detail: samples order: 3 working day; mass order: 28 working day Specifications 1.mini bluetooth headphones; 2.CSR Chips; 3.Sport earphone; 4.Extremly Competitive Price; 5.excelent audio quality Descripton:Wireless bluetooth headset HS1800 for Mobile phones- for excelent audio quality , great wearabbiliby and headband design, lets you lose yourself in the music knowing you won't miss a call. With a Blueto
Brand Name: JNP-Tech; OEM Model Number: JNP-V810BT(G)K Style: Headband Communication: Wireless Connectors: Bluetooth Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Compatibility: Mobile Phone, PC, MP3 player, etc. Color: Black, white Packaging & Delivery Packaging Detail: Gift color box package or customized design. Delivery Detail: 25 days Specifications 1. Support A2DP, AVRCP, headset, hands-free profile. 2. Pillow-soft ear cushions. 3. Hi-fi quality, crystal clear sound. Basic Information Faster connecting, clear sound, anti-interference. Built-in Omni-directional microphone Bluetooth Version: V2.1 + EDR, Class II. Support A2DP, AVRCP, headset, hands free profile. Buttons: Play/ Pause, VOL +, VO -, Call/ Receive. Blocks 4 times the external noise to get crystal clear sound. Holding time: around 7 hoursWorking distance: 10 meters Pictures of JNP-V810BT(G)K :