Peltor Sport 3M Tactical 300 Sound Canceling Ear Protection Originally bought for $124.00 Used 3 times NRR: 24 dB noise reduction rating IDEAL FOR both indoor and outdoor shooters and hunters DYNAMIC SUPPRESSION TIME measures the energy in gunshot noise and automatically sets suppression time for reduced echoes and increased comfort CLEAR VOICE TRACKING seeks voice within background noise and actively filters noise for improved speech intelligibility DURABLE RECESSED MICROPHONES prevent damage and reduce wind noise VENTED HEADBAND adjustable, improves comfort when worn with hats RUNS ON 2 AA batteries (not included) or Alpha 1100 lithium ion rechargeable battery (sold separately) Vented, adjustable headband improves comfort when worn with hats Durable recessed microphones designed to reduce wind and fan noise