Megadream-Wireless-Bluetooth-Sports-V40EDR-Stereo-Invisible-InEar-Mini-Earphone-Earpiece-Headphone-with-Microp

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

Package Contents:

1x Bluetooth Earphone
1x USB cable