VoiceBooster Type 1 Push To Talk (PTT) Cable for use with iComm Only works with the iComm Has one mono male 3.5mm end. The other end is a micro momentary push button The VoiceBooster brand is owned by TK Products, LLC. Each VoiceBooster product comes with a 6 month parts and Labor Warranty that is serviced by TK Products, LLC. The VoiceBooster must be purchased through TK Products or one it's authorized dealers for Warranty Claims to be honored. Buy with confidence!