1. Driver: 15mm
2. Impedance: 32 OHM
3. Bluetooth version: Bluetooth v4.2 + 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 4-5 hours
14. music time about 4-5 hours
15. Standby time is about 100 hours
How To Connect The TWS i7?
-Use Two Earbuds Together
a. Long press the multifunction button of two earphones at the same time until the LED flash in red & blue alternately.
b. Turn on the bluetooth on your device and select “TWS-i7”, it will say “connected”.