U8s Metal button IPX7 Waterproof sport earphone

Technical specification:
- Bluetooth Specification: CSR 8635 Bluetooth V4.1+EDR or QCC3003 Bluetooth V5.0 + EDR
- IPX7 Waterproof with Nano coating
- Noise Reduction: CVC6.0
- Transmission Distance: 33ft
- Battery: Lithium-ion Polymer 90mAh
- Frequency Response: 20 -20KHz
- Charging Port: Micro USB
- Charging Time: 1-2 Hours
- Playback Time: 7-8 Hours
- Standby Time: 250h
- Support profiles: HFP, HSP, AVRCP and A2DP