Nova Poshta & 
Ukrposhta.
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LIBERATOR ll radio headphones are designed to protect hearing organs from loud firing sounds, as well as ensure that,
when necessary, you can hear non-loud ambient sounds, warning signals, and equipment sounds.
Radio headphones provide:
- the function of automatic volume control of sound, amplifying weak sounds and weakening strong ones.
External communication and volume of the automatic sound volume control function are independent of each other;
- manual volume control;
- the function of automatic volume control when working in stereo mode;
- the function of storing in memory the last setting when turned off;
- priority to the external radio signal, which should be transmitted even in case of power failure;
- automatic shutdown after 2 hours of inactivity, as well as a warning signal a minute before shutdown;
- a function that, when the battery charge level decreases, signals this.
Signals are issued every 30 seconds for 5 minutes before turning off the headphones;
- polarity protection, preventing damage to the circuits in case of improper insertion of batteries;
- reduction of noise at high frequencies - 31 dB;
- reduction of noise at medium frequencies - 28 dB;
- noise reduction at low frequencies - 16 dB.
- protection against loud sounds up to 190 dB (all light and noise grenades)
Battery life is 600 hours. Batteries are placed in a waterproof unit. In LIBERATOR ll there is one compartment for batteries with a closing lid, which increases resistance to moisture penetration.
Headphones are waterproof, i.e. remain in working condition after extraction from water.
Headphones are waterproof, i.e. they still work after extraction from water.
Headphones weight –355 g.