SordinHEAR2 inside providing excellent sound quality and four different audio profiles (Hunting, Focus, Shooting and Comms). Waterproof microphones and battery compartment. Sealing rings of PVC foam as standard (GEL rings available as accessory). Easy-to-use push buttons to control the electronic functions. A level-dependent function allows you to hear ambient sound such as warning signals, moving vehicles and important information while being safely protected from hazardous noise. Amplification of weak sound. Natural sound reproduction using high-quality speakers inside the cups. Sound reproduced using the level-dependent function is limited to maximum 82 dB. Automatic switch-off after 4 hours if no button is activated, saving battery time. Audio input (AUX) for connecting an external audio source, such as a communication radio (3.5-mm mono cable is included). Low battery warning when approximately 40 hours is left of the battery life. Efficient attenuation even when wearing glasses. Batteries (g) = 267/ 292.