The all-new RECON Digital Electronic Muffs not only boast lightning-fast Sound Activated Compression (SAC) and a noise reduction rating (NRR) of 24 to ensure your hearing is always protected-they also deliver digital amplification technology that bolsters low-level environmental sounds, so you hear what you should. Their sleek, highly packable design includes sound-dampening composite housing and bonded rubber coating, adjustable 2, 4, and 6-hour auto shutoff, and a 3.5mm audio jack for connecting smartphones, computers, and other electronic media devices. Users will also enjoy Bluetooth connectivity via all-new RECON Hybrid Communicator Walkie Talkie compatibility*, in addition to 22 GPRS radio channels for hands-free communication from as far as 3 miles away. 24dB noise reduction rating Split-second Sound Activated Compress (SAC) Digital MEM low-noise microphones deliver clear sound Full dynamic range HD speakers for clear balanced sound Folding, cushioned headband Sound-dampening composite housing BluetoothA(R) connectivity via all-new RECON Hybrid Communicator Walkie Talkie compatible, in addition to 22 GPRS radio channels for hands-free communication 3.5mm audio jack accepts a wide range of input devices like MP3 players, phones, etc. Order today!