Features: Highlight Audience with good quality. - 50 dB. - 4 Windproof, High Frequency, Stereo Earphone - microphones for precise sound directionality. - Adjustable Frequency Tuning-R. - 2 independent volume control knob. - sound activated compression-SAC. - Ultra-light weight 330g ... designed classic headband. - Ear cushion leather. - Iron gauze cover for microphones. - operate on 2 "AAA" batteries. (not included) - classification-NRR 23 dB noise reduction. 1. Hearing Enhancement with good quality. High sensitivity can capture and amplify the slight sounds (of animal origin), and you can response quickly. 2. Adjusting Frequency Adjustable-REAR, users can adjust sensitivity by rotating the gear on the beaker. 3. Sound Enabled Compression-SAC, reduces loud sounds, such as snout muzzles, to safe levels. it will for always protect you while shooting and hunting outdoors. 4. Great for the range of NRA for masters and instructors. 5. Ultra-light weight 6. Special designed for head ear cushion and ultimate acoustic seal. allow you to feel comfortable when you are using it for a long for time. 7. Four independent volume controls to allow true stereo sound while wind-resistant microphones make it easy to identify the high frequency sound and dirextion Specifications: Color:As the picture shows Material:plastic Quantity: 1Pc Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-3cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: (Without retail package) 1Pc x Electronic Ear Muff