1.D.S.P version with echo cancellation and noise suppression for real full duplex.
2.Bluetooth Specification:version2.0 class2.10 meters
3.Bluetooth Profile Supported:Headset and Hands-Free Profiles.
4.Operating Frequency Band:2.402~2.480GHz specturm.
5.Input Voltage:12V-24V DC
6.Dimension/weight:(L)63MM*(W)47MM*(H)58MM