ONIKUMA GT811 Head-mounted Dual Noise Reduction Wireless Bluetooth Earphone(Black)

1. Driver diameter: 40mm
2. Bluetooth version: 5.4
3. Support protocols: AVRCP1.6.2, A2DP1.3.2, HFP1.8, HSP1.2
4. Bluetooth distance: 15m
5. Sensitivity: 115±3DB
6. Frequency: 2401MHz-2478MHz
7. Microphone sensitivity: 42±3DB
8. Frequency response range: 20HZ-20KHZ
9. Battery capacity: 500mA
10. Use time: about 55h
11. Audio delay: 60ms
12. Charging time: about 2h
13. Charging interface: Type-C
14. ANC+ENC upgraded dual chip, hybrid noise reduction technology
15. Support Bluetooth and 3.5mm jack device connection, wired and wireless switch at will
16. Strong compatibility, support most electronic products and devices on the market