Bluetooth 4.0 Mini Hands-Free In-Ear Smallest Earpiece Headset With Microphone Support Smartphone

Specification: 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: 10 meters barrier 7. Frequency response: 20-20000 Hz 8. Operating voltage range: 3.0V-4.2V 9. Microphone sensitivity: -42dB 10. with A2DP / AVRCP high-quality stereo audio transmission and remote control protocol 11. Powerful noise noise cancellation circuit (Active Noise Reduction) 12. Wired and Bluetooth automatically switch to support audio input 13. Charging time is about 1 hour (power indicator Charging: blue light lights, fully charged: blue light goes out) 14. Dimensions: Diameter length 20MM. Width 15MM. 18mm high 15. Weight about 4g 16. Talk time About 4 hours 17. Music for about 3 hours 18. The standby time is about 3-4 days 19. Charging Power: DC5V Power Interface [the hole] (computer USB port, mobile phone charger, car charger) 20. Compatible: Compatible with Android, Apple, Microsoft, Symbian 99% of with Bluetooth cell phones(IOS cell phone has power display)

Package Contents: 1 x Bluetooth Earphone 1 x USB cable