NBP Series - TACTICAL BONE CONDUCTION HEADSET. Bone Conduction Speakers, Boom Microphone and Round (Hockey Puck) PTT switch. Finger-Tip PTT and Junction Box UPGRADE Available for extra charge ($35 MSRP).
Fits older Vertex radios with multi-pin connector (note: NOT compatible with VX-537 or NYPD models) including: VX-310, VX-500, VX-510, VX-520, and VX-520UD.
