Q20 Bluetooth 5.2 Business Digital Display Sports Earhook Stereo Earphone 1. Material: ABS, silicone ear caps 2. Battery: 300mAh 3. Frequency: 20Hz-20KHz 4. Bluetooth version: 5.2 5. Support protocol: HEP\HSP\A2D\AVRCP 6. Transmission distance: about 10 meters 7. Impedance: 32 ohms 8. Charging time: about 2h 9. Time for listening to songstalking: about 30h 10. Waterproof rating: IPX5 11. Microphone sensitivity: 85dB 12. Packing list: earphone x1, charging cable x1, ear cap x2, manual x1 13. Headphone size: about 7.2x6x2.1 cm 14. Headphone weight: about 12.6 grams Features: 1. Multi-process rigorous design to prevent sweat from damaging the components, without fear of wind and rain 2. The wonderful combination of composite diaphragm + large dynamic circle acoustic technology restores the high frequency and brightness of music, and the fixed frequency is thick and flexible 3. The soft rubber ear hooks are relaxed and comfortable to wear 4. Double noise reduction system, filter the noise of the external environment, deep noise reduction, so that the call is as clear as a face-to-face interview 5. LED power display, keep track of power 6. Ergonomic ear-hanging design, according to the shape of the human auricle, disperses the stress points of the ear, and is not easy to fall 7. Fully compatible, connect with Bluetooth, support multiple APP platforms, Bluetooth transmission connection distance up to 10M 8. Built-in rotatable shaft, easy to rotate 270 degrees, the comfortable angle can be adjusted arbitrarily according to wearing habits 9. Bluetooth 5.2 chip, stable transmission, simple connection, more enjoyable calls and songs, stable phone calls, and no lag in games