PTE-540D (with optional Big Round PTT) enables clear communication in noisy environments while keeping the ear canal open for situational awareness, featuring a comfortable silica gel-integrated speaker/microphone and a precise. Its Kevlar-reinforced, PU-coated cable boosts durability, making it ideal for use with helmets and masks; it’s suited for firemen, chemical defense personnel, SWAT, policemen and operation forces. Speaker Specification
