The NoizeBarrier Range SA was originally designed for military use, and is the premier headset for true firearm professionals. Whether you are in an outdoor / indoor range or a tactical shoot house, the NoizeBarrier Range SA offers top of the line experience and hearing protection. The tactical communication headset features 360-degree advanced situational awareness, and industry-leading hearing protection for any live-fire training activity. OTTO has collaborated with tactical operators to design and engineer a headset that meets the demands of todays modern firearms user. The results are crystal clear audio and precise situational awareness, delivering an unparalleled soundscape experience for maximum safety and performance. The NoizeBarrier Range SA combines industry-leading hearing protection and extreme comfort. This headset was designed for long term use, and can be worn all day without discomfort. The shape of the ear-cups was designed with the best ergonomic principles in mind, allowing for a smooth shouldering of your firearm, and it fits well with safety glasses and other equipment. Specifications for OTTO Engineering NoizeBarrier Range SA: Manufacturer: OTTO Engineering NRR: 23 dB Quantity: 1 Size: One Size Application: Tactical Battery Type: AAA Battery Quantity: 2 Battery Life: 72 hours Operating Temperature: -40 - 71 Celsius Headphone Style: On/Over Ear Water Resistance Level: IP68 Gender: Unisex Features of OTTO Engineering NoizeBarrier Range SA Volume-adjustable situational awareness microphones provide accurate sound localization to enhance user experience 360-degree situational awareness microphones provide a 3D soundscape Comfortable, ultra-soft Comply foam ear cushions form a tight seal to significantly block unsafe noise Push-buttons control volume of situational awareness up to five different levels Noise amplification allows you to intensify your hearing; heightens barely audible low sounds with the integrated microphone system so that you can better hear important noises while tactically moving or at the range The active volume feature allows you to reduce extra loud noises to a safe level with no clipping or shut-down of situational awareness when impulse noises are present Ear seals snap in for easy field replacement, without the need to use tools Ear cup is designed to fit well with safety glasses Talk time of 100 hours if 2 AAA lithium ion batteries are used. Auto idle shutdown will not degrade with depleting batteries Available colors: Black, Flat Dark Earth and Olive Drab Green Sophisticated technology automatically adapts harmful loud or impulse sounds to a safe level, while situational awareness microphones amplify normal-level sounds and nearby conversation. Offers outstanding hearing protection with an NRR of 23 dB (SNR: 29 dB). May also be configured to connect to a speaker mic or surveillance kit to receive clear, discreet communications and hearing protection in active tactical situations. Clarity of situational awareness does not degrade over entire life of batteries. Compliant to MIL-STD-810G specifications Automatic shutdown after 2 hours of idle time TAA, BAA, MIL-STD-810G, and Berry Amendment compliant Meets IP68 standard to withstand full immersion to 1 meter for 31 minutes Package Contents: OTTO Engineering NoizeBarrier Range SA