Universal Motorcycle G4 Power Set [G4 Powerset w/corded mic] Vehicle to vehicle intercom communication up to one mile (depending on terrain) between two riders, thre riders or two couples on two vehicles A2DP compatibility with MP3 players/Ipods to listen to wireless STEREO music (campatible Bluetooth and A2DP enabled MP3 device required) VOX Technology- receive , initiate and reject calls by voice control Embedded FM radio with seek and scan functions and six user defined stations Full duples- allows simultaneous talking and listening beween bikers