*Bluetooth version: Bluetooth 4.1

*Transmission distance: No obstacle 10 meters

*Frequency Response : 50HZ-10KHZ

*Output sensitivity : 99+-3DB

*Microphone sensitivity : -42+-3DB

*Battery capacity: 50MA/H

*Speaker impedance: 16

*Euro Rated power: 5MW

*Drive Unit : 6MM

*Playback time: 3.5H

*Standby time: about 100H

*Charging time: about 1.5H

Support function:

answer/hang up the phone

MP3 player

last number redial

music switch

IOS battery display 

multi-point connection Switch between Chinese and English.

Product net weight: 3.8g