Exclusively at FRANKONIA. The Swedish manufacturer Sordin is the official supplier of the US Army. Digital earmuffs with a good sense of direction. Gain 15dB linear. Up to 4x noise amplification. Reliable shot blast insulation and good speech intelligibility. For two 1.5 V batteries (included). Over 600 hours of service life. With automatic switch-off. Weight including batteries only approx. 300 g.