The power supply is from 2 alkaline batteries 1.5V AAA ( not included) , which provide about 350 hours of operation of the earmuffs. Automatic shutdown after 4 hours of operation is also provided. Noise reduction level NRR22. Four electronically tuned ambient sound amplification levels. Voice recognition versus ambient noise. On and off signal. Waterproof to IPX 5 standard . Ergonomic design. Built-in NATO Military Standard 7.0 PTT jack . Complete with microphone , which can be placed on the left or right side of the earmuffs at the request of the shooter. Additionally, you can buy a PTT device for the most popular types of radio stations. Comply with CE / RoSH / ANSI S3.19-1974 standards. 1 year warranty. The EARMOR M32H is an active electronic communication earphone based on the M32 and comes with a helmet rail adapter for FAST MT Helmets, ideal for tactical applications. Comes with a 4-pin MIL-STD plug for PTT (Nexus TP-120; Not compatible with Ztac PTC), and the removable microphone designed for left or right use is convenient to use and helps the user to have seamless communication even in deafening combat situations. * Anti-fake activation: Press and hold the middle button for 3 seconds to turn on / off the power. * M32H-Teamwendy (for EXFIL® helmet rails) CHARACTERISTICS - Noise reduction class NRR22 - 3 levels of electronic ambient sound recovery - Suppresses harmful noise above 82 dB - Various reminder tones for on / off and recovery adjustment - Powered by 2xAAA batteries, approx. 600 hours of operation with new alkaline batteries, 4 hours of automatic shut-off mechanism - Ergonomically designed cups provide super comfortable carrying and sealing - Replace the battery as a Flash with a designed cap to rotate up to 30 ° - Built-in NATO 7.0 PTT plug * - Removable microphone for both left and right mounting - Anti-sweat with NANO technology - Foldable, designed for easy carrying - Waterproof in accordance with IPX-5 - Tested and approved in accordance with CE / RoSH / ANSI S3.19-1974 Standards / EN352-1: 2002 / EN352-4: 2001 / A1: 2005 / EN352-5: 2002 / A1: 2005 / EN352-6: 2002 / FCC
