Waterproof sealed Military Spec, electronics, microphones and battery compartment, submersible to 1 metre for 30 minutes. ASIC* digital electronic sound reproduction compresses impulse noises to ensure true life stereo sound reproduction without chopping. 600 hours of battery life (2 x AAA) with battery save function. Twin speakers in each ear cup for fail safe audio Sound level is limited to 82 dB(A) to ensure good hearing protection Leather headband cover improves comfort and durability AUX input for RX audio receive function Learn More