Main Features:
M20 Bluetooth headphone/headset is a high quality headphone for working and playing games， listening to music.
Wireless， it is convenient to use.
Bluetooth version: Bluetooth V2.1 + EDR (Enhanced Data Rate) and is compatible with V2.0 and V1.2 standards.
Chipset: CSR BlueCore5 stereo chip.
Support Bluetooth: A2DP， AVRCP， Headset Profile， Handfree Profile
Transmission power: Class2
Frequency: 2.4G
Transmission distance: 10M
Microphone sensitivity: [-45dB (0dB = 1V / Pa， 1KHz)]
Compatible with the PS3 and all major brand Bluetooth mobile phone， with Bluetooth wireless transmitter that can be used online voice chat

Specifications
General
Model : BH-M20
Color : Black
Wearing type : Headband
Function : Answering phone， Bluetooth， Song switching， Microphone， HiFi
Specification
Connectivity : Wireless
Connecting interface : Micro USB
Application : Mobile Phone， Computer
Plug interface: Bluetooth， Micro USB
Cable length : No
Sound channel: Two-channel (stereo)
Working voltage: 3.3-4.2V
Working time: Talk time: 12 hours; Music time: 8-10 hours
Standby time: 250 hours
Charging time: Less than 5 hours
Extended Function
Bluetooth version: V2.1+EDR
Powlev: CLASS II
Bluetooth distance: W/O obstacles 10m
Bluetooth chip: SR BlueCore5 stereo chip
Bluetooth protocol: A2DP， AVRCP
Bluetooth mode: Hands free， Headset
Dimension and Weight
Product weight : 0.098 kg
Package weight : 0.35 kg
Product size (L x W x H) : 15 x 14 x 3 cm / 5.90 x 5.50 x 1.18 inches
Package size (L x W x H) : 23 x 19 x 10 cm / 9.04 x 7.47 x 3.93 inches
Package contents
Package contents: 1 x Earphone， 1 x USB Cable， 1 x English Manual