SportEar Micro Blast 30 Pair 100% Digital signal processing 7x normal hearing Amplification Includes case, batteries, cleaning kit, acoustic tips, flare tips, foam tips, and instructions manual 8X Normal Gain Two digital channels provide high fidelity in the outdoors Feedback cancellation technology protects against internal feedbak 30 dB NRR w/comfort foam tip AutoBlocker compression protects you from incoming noise (such as gunfire) 90 db and above Welded case keeps moisture and perspiration