Bone conduction painless wear: This bone conduction headphones produce sound through vibration, which solves the problem of in-ear pain. With an adjustment strap, you can adjust the tightness according to your head shape.
IPX8 waterproof：Deep waterproof headphones bone conduction, you can wear bone conduction headphones while surfing, swimming, or even bathing, without taking off the waterproof headphones.
Large battery&Fast charge：Bone conduction headphones have a built-in 180mAh battery, which can play for 10 hours after being fully charged in 2 hours. You can enjoy music indoors and outdoors without worrying about running out of power.
Bluetooth 5.0: The bone conduction headphones for swimming has the latest Bluetooth 5.0 chip built in, compatible with any Bluetooth device. The transmission is stable without delay. You can move freely within 10 meters without interference.
<b>Specifications:</b><br> Model Number: K7<br> Bluetooth: V5.0<br> Bluetooth IC: QCC3003<br> Bluetooth Profile: A2DP, HFP, HSP, AVRCP, GAVDP, AVDTP<br> Operation range: Up to 10 meters (no obstacle)<br> Frequency Range: 20-20KHz<br> Receiving Sensitivity: 84±3dB<br> Impedance: 10Ω ± 15%<br> Mic: -36dB, anti-interference microphones<br> Battery Capacity: 180mAh<br><br> Music Playing Time: up to 10 hours (depends on music volume)<br> Standby Time: 15 days<br> Charging Time: about 1.5 hours<br> Colour: Black, Grey (Optional)<br> Main Item Size: Approx.14 * 11 * 4.5mm<br> Main Item Weight: 42g<br> Package Size: 16.4 * 13.3 * 5.8cm<br> Package Weight: 182g