The Razor Slim XTRM series features cooling headband, a noise Reduction rating (NRR) of 21 dB and utilized sound activated compression (SAC) of 0.02 seconds. SAC is a special electronic circuitry that will compress gun shots and other loud noises down to a safe level, without completely shutting the noise off. This allows you to hear range commands or communicate with your hunting partners, even when shots are being fired around you. Includes 2 AAA batteries.
Specifications:

Type
Color	Battle Brown/Black
NRR	21 dB
Quantity
Style	Over the Head
AFT Circuit
Battery	AAA
Compression Circuit	Yes
Material	Polymer