K39 Clip Collar Wireless Stereo Telescopic Collar Clip Earbuds Incoming Call Vibration Business Single Ear Sports BluetoothFeatures:1. Wireless binaural stereo, left and right ear channel separation, HIFI sound effect 2. The left and right ears can be used separately (mono) or in pairs (stereo)3. Ergonomic, small size, easy to carry. Pick up the automatic startup and pairing, and automatically shut down the battery compartment for charging 4. Bluetooth distance: barrier free distance 10m 5.The amazing appearance is not transparent, but also has powerful chip support. With Bluetooth V5.2 chip, it can effectively avoid signal interference and has more stable performance 6.Driving office moreconvenient,single ear independent use 7.Main FeatureTrue wireless, binaural call, high-fidelity stereo music playback magnetic charging, convenient and fast; multi-function button, easy to operate; one-touchs callback function; storage charging bin, lasting battery life; Product Description:Bluetooth version V5.0Transmission distance: 10MTransmission frequency: 2.4GHzCharging voltage: DC5VCharging time: about 1.5 hours fullTalk time: more than 3 hoursMusic time: 6 o'clock or moreStandby time: more than 260 hoursHeadphone battery capacity 35mAhCharging compartment battery capacity: 250mAHProtocols supported! The following protocols are supported!-Hands Free 1.6!-Headset 1.1!-A2DP 1.2!-AVRCP 1.5Function:Take out the charging compartment and start up automaticallyPut it in the charging compartment and automatically shut downIntelligent voice reminder, call numberChinese and English bilingual switchingSynchronous display of volume/power on mobile phoneOne-to-two, can connect two mobile phones at the same time Product list: v\:* {behavior:url(#default#VML);}o\:* {behavior:url(#default#VML);}x\:* {behavior:url(#default#VML);}.shape {behavior:url(#default#VML);} 1x earphone1x manual1x charging cable