A1S earphone bluetooth waterproof wireless earbuds hands-free sports headphones with microphone single ear headset with mic
- Bluetooth version：5.2
- Support protocol：A2DP/HFP/SPP/HID/PBAP
- Bluetooth range：≥10m
- Battery capacity：75mA
- Charging time：About 1h
- Standby time：120h
- Call time：About 15 h
- Music playing time：About 10h
- Speaker size：13mm
- Frequency：20Hz-20，000Hz
- Impedance：16Ω
- Sensitivity：103±3dB
- Charging specification：5V/1A
- Operating voltage：3.7V
