The impact sport is designed to amplify surrounding sounds such as voices, machines, and warning signals to safe levels, yet it provides good hearing protection.Loud impulse sounds are effectively blocked out and limited to safe levels.The unique stereo microphones allow detection of the direction of ambient sounds, enhancing communication abilities and awareness of surroundings.This earmuff is provided with electrical audio input.Type: EarmuffColor: BlackNrr: 22 dBQuantity: 1Style: Over the HeadBattery: AAA