The AKT1 Sport Blackout TWS Electronic Bluetooth Ear Plugs feature a small and ergonomic design for a comfortable all-day fit. These ear plugs boast 6x hearing enhancement for superior situational awareness so you can easily hear range commands and feature auto noise blocking with an impressive Noise Reduction Rating (NRR) of 25dB certified by Penn State laboratory.Specifications and Features: Small, ergonomic design Low-profile allows you to double up with earmuffs 6x hearing enhancement for superior situational awareness Impressive NRR 25dB certified by Penn State laboratory Enhanced noise cancellation perfect for indoor ranges Bluetooth compatible Easy finger tap controls Rechargeable with up to 10-hour battery life Pocket-sized carrying case Includes 3 pairs of foam ear tips (small, medium, and large)