i7s TWS wireless bluetooth earphone with charger box-Black
i7s TWS ওয়্যারলেস ব্লটুথ ইয়ারফোন উইথ চার্জার বক্স-Black
1. Driver: 15mm
2. Impedance: 32 OHM
3. Bluetooth version: Bluetooth v4.2 Upgraded to 5.0+ EDR
4. Bluetooth use band: 2.4GHz
5. Power level: CLASS II
6. Output power: 30mW
7. Bluetooth distance: 10 meters barrier
8. Frequency response: 20-20000Hz
9. Operating voltage range: 3.0V-4.2V
10. Mic sensitivity: -42dB
11. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol
12. Powerful noise de-noising circuit (active noise reduction)
13. switch between Chinese and English (boot does not connect Bluetooth state, press the switch 2 times, hear the tone switch successfully)13. Talk time is about 2-3 hours
14. music time about 1.5-2 hours15. Standby time is about 100 hours
