Latest Bone Conduction Bluetooth HeadphonesThe open-ear design helps you keep an eye on the vibrancy of the surrounding sounds and reduce traffic accidents and other hazards when listening to music.Ergonomic and anti-drop design, titanium wraparound headband is lightweight and flexible, great for durability and portability.Equipped with Bluetooth 5.0, bluetooth bone conduction headphones will quickly pair with most devices.Specifications:Receiving sensitivity (TYP): -81dBmBluetooth range: 15 metersBest Talking Distance (TBR): 10 metersMax power of earphone: 0.5WPower amplifier type: Class ABAudio signal-to-noise ratio S/N: 85dBFrequency response: 20-20KSpeaker type: Φ16MM Bone conduction impedance 8 Ω±15% Sensitivity 84±3dBMicrophone MIC: 4015 with line microphone, -42dbBattery: Built-in lithium polymer battery, 3.7V/230mAHMusic time: about 5 hoursTalk time: about 6 hoursStandby time: about 220 hoursCharging input criteria: TYPE-C DC-5V/800mA±50mACharging time: 2 hoursPackage Contains:1 * Bone Conduction Bluetooth headphones1 * Noise Reduction Earplugs1 * Charging Data Cable1 * InstructionNote：1. Do not buy if you have insufficient hearing!2. Chinese and English bilingual manual.3. If there is any problem with the product, you can contact us directly! We will solve the problems for you immediately.