1. Ipx4 waterproof/antiperspirant function. 2. Ergonomic design, comfortable fit to wear, firm does notfall. 3. Fashion portable charging compartment can charge headphones True binaural wireless, you can also choose single-ear or binaural mode to use. The headset will be automatically paired when it is taken out, and no key is required to turn on the headset. When talking on the phone, both ears can answerthe call. 4. Standby time 300 hours Net weight of product: 50g With Touch operation up and down, answering the phone and other functions " 5. Bluetooth Version:V5.0 6. Channel System: Stereo 7. Battery capacity: 55mAh, 3.7v/300mAh 8. Driving unit: 6mm 9. Color: black 10. Charging time: 1h 11. Call duration: 3h 12. Music duration: 2.5h 13. Sensitivity: 92db±3db 14. Horn impedance: 32O15% 15. Support agreement: HSP/HFP/A2DP/AVRCP 16. Input charging standard: DC 5V 17. Bluetooth operating frequency:2.402G-2.480G 18. Maximum transmission distance:10M 19. Voice prompt: support 20. Multipoint connection:suppor