Targeted NRR of 26 dBA for passive sound protection. Suppresses gunshot noise and amplifies low sounds using proprietary 3M technologies. Gunshot Recognition and Suppression Technology optimizes noise protection based on the firearm being used and the environment in which it’s being used. Clear Voice Tracking Technology seeks voice amongst the noise to improve speech intelligibility and situational awareness. Bluetooth Wireless Technology to seamlessly sync to mobile devices. Make and receive phone calls through the headset. Engineered for optimal fit and comfort. Foldable and adjustable.NRR: 26 dB noise reduction ratingIDEAL FOR both indoor and outdoor shooters and huntersBLUETOOTH TECHNOLOGY to stream music and make callsDYNAMIC SUPPRESSION TIME measures the energy in gunshot noise and automatically sets suppression time for reduced echoes and increased comfortCLEAR VOICE TRACKING seeks voice within background noise and actively filters noise for improved speech intelligibilityDURABLE RECESSED MICROPHONES prevent damage and reduce wind noiseRUNS ON 2 AAA BATTERIES (not included)Low-profile cups have cut-outs for use with firearmsVented, adjustable headband improves comfort when worn with hatsDurable recessed microphones designed to reduce wind and fan noise