Feature: 1. Noise Cancellation: The built in directional microphone amplifies range commands and other ambient sounds within a safe 82dB range, providing a more listening experience. 2. Adjustable Design: The adjustable headband ensures a secure and comfortable fit, while the compact folding design allows for convenient storage. 3. Hearing Protection: It can offer the ultimate in safety and ear protection. Protection comes from instantaneously blocking any noise above 82dB. 4. Connecting Design: It include an external connection device, allowing them to double as stereo earphones when connected to an player or other sounds sources. 5. Usage Scenes: Specifically designed for use at outdoors. The noise canceling feature ensures hearing protection, allowing you to concenstrate on important range commands and environmental sounds while hunting. Specification: Item Type: Walker Electronic Earmuffs Material: ABS Battery Type: 2 x AAA Batteries (Not Included) Size: Approx. 101 x 96 x 124mm / 4 x 3.8 x 4.9in Weight: Approx.343g~ 351g / / 12.1~12.4oz . Package List: 1 x Walker Earmuffs1 x English Instruction1 x Connecting Cable