Description: Noise reduction pickup function, convert the high-decibel noise and popping noise collected at 360 degrees into the human hearing acceptance range. The binaural microphone will automatically process the noise over 85 decibels, and the noise reduction rate is 25NRR. Sound Amplification Max. 8 Times. it can help you to get more slight sound of animals easily. Integrated power/volume knob. Operates on 2 'AAA' batteries (Not included). 3.5mm dual-channel audio interface can be connected to audio equipment such as mobile phones and computers. Made of the highest quality microchip to keep nice sound quality. when you hunting outside, you can still Enjoy your music when using our shooting earmuffs. Headband size can be adjusted according to your need, and the foldable design, easy to carry and store. Size Chart: Folded: 12.5x11.2cm/4.92x4.41inch Unfold: 8.4x18.5cm/3.31x7.28inch Package Includes: 1 Pair of Electronic Shooting Earmuffs Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!