Lightweight, adjustable headset with Swivel Boom Microphone Lightweight headsets allow for high clarity hands-free, discreet two-way communication while adding comfort necessary for extended wear in moderate noise environments. Specification Overview: Type - Lightweight Configuration - Over-the-head / Headband Style - Monaural Receive Only - No Transmit Method - Microphone Receive Method - Standard Noise Cancelling Microphone - No Noise Reduction (ear phone) - No VOX Capable (Voice Activated Microphone) - No Intrinsically Safe - No Compatible with: - CP100 - SP10 - SP21 - VL50