Mini Bluetooth Wireless Earphone in Ear Sports Headphone Stereo Headset Earpiece with Mic Handsfree For iPhone Samsung Xiaomi

Stereo chip (single ear Bluetooth), mainly listening to songs, calling mainly
1. Drive: 40 mm
2. Impedance: 32 OHM
3. Bluetooth version: Bluetooth v4.0+EDR
4. Power Level: CLASS II
5. Output power: 30mW
6. Bluetooth distance: accessibility 10 meters
7. Frequency response: 20-20000Hz
8. Operating voltage range: 3.0V-4.2V
9. Mic sensitivity: -42dB
10. High-quality stereo audio transmission and remote control protocol with A2DP/AVRCP
11. Powerful noise cancellation circuit (active noise reduction)
12. Switch between Chinese and English (when the power is turned on, Bluetooth is not connected, press the switch twice and you hear the tone switch successfully)
13. Charging time is about 1 hour (power indication charge: red light, full charge: red light off (blue light).)
14. Product size: diameter 20MM. 15MM wide. 18mm high
15. Product net weight about 4g
16. Talk time is about 4-5 hours
17. Music time is about 3-4 hours
18. Standby time is about 2-3 days
19. Charging power supply: DC5V power supply [round hole interface] (computer USB port, mobile phone charger, car charger)
20. Compatible Phones: Compatible with Android, Apple, Microsoft, and Saipan 99% Bluetooth-enabled Mobile Phones

Packing:
1 x Bluetooth headset
1 x USB charging cable (round hole interface)