The MSA Sordin Supreme IV Basic Headset is a slimline electronic hearing protector for hunting and shooting. The simple yet effective technology in this headset provides the essential approved base features for adult hearing protection during a shoot. Built in reproduction of ambient sound protects hearing without isolation. The design allows communication without the need for removal. Both earmuffs have slim cups shaped for left and right handed shooters, and the ergonomic design folds easily for storage. The analogue electronics support two separate and well-shielded microphones for optimum stereo effect and location of sound direction. Average running time is approximately 150 hours per 2 AAA batteries. An automatic switch-off feature saves on battery life during idle periods.