K89 TWS Bone Conduction Bluetooth Headset Stereo Business Sports Headset(Blue)

1. Chip: BlueCom2. Bluetooth pairing: BT GCD3. Bluetooth version: 5.04. Charging port: USB5. Transmission distance: about 10m6. Battery capacity: 90mAh7. Alert tone: Chinese/English8. Life time: about 7-8H9. Microphone: enhanced sound guide tube10. Light effect: 7 color lights, three strikes on/offFeatures:1. Memory titanium alloy skeleton, according to different head size adaptable shape, twist at will, constantly not fall off2. Key operation, convenient and simple3. Fitted ear design, multi-point support, comfortable and robust, running / hiking / skateboarding do not fall off4. 360 degree hearing, metal cavity, the voice is more mellow, cavity structure, effectively reduce the secondary mixing, with a large dynamic woofer unit, the sound is more powerful5. Sound conduction technology, HiFi level sound quality6. Intelligent one to two, dual devices, seamless switching, a cell phone can be connected to two Bluetooth devices at the same time