Magnetic Recording Device Voice Activated Mini Audio Recorder Digital voice recorder AMMO This hat also features an 130981 This hat also features an adjustable hook and loop closure on the back It's an ideal format for a good shooting experience Specifications:Record Format: WAVColor: BlackBuilt in Memory: 8GBBody Material: ABS non slip textureRecording Time: 40 days continuous recordingMax Recording Time: 400 hours Recording Method: one button recordingDistance: 5 MMicrophone: Built in HD microphoneRecording Bit Rate:192 KbpsProduct Weight: about 65gBattery: 2200mAh lithium batteryPackage Includes:1x Voice Recorder1x USB Cable1x User Manual1x Earphone