The GEN II VPU when deployed with the FM53, FM54 or M53A1 Air Purifying Respirators; the most tactically advanced masks in the world, provides the operator with the best-in-class respiratory communications platform available today. Originally developed for US Special Operation Lower profile, compact footprint Audible notification upon initial activation Tactile feel on/off lever Intrinsically safe rated; UL913 50+ hours of use on a single CR123 lithium battery; battery life indicator Enhanced, robust battery door Water proof microphone assembly MIL-SPEC PRF EA-A-2246 compliant MRT >95% Improved sound quality with digital circuitry NIOSH/CE approved Excellent compatibility with tactical gear such has EOD helmet and weapons Low maintenance and easy to operator Compatible with tactical radio systems DUE TO THE NATURE OF THIS PRODUCT ALL SALES ARE FINAL