Slim low profile muffs LED light power indicator Aux jack and cord included preserve battery life with 4 hour auto shut off Aux jack and cord included ultra-fast attack time of 0.5 millisecond offers optimal noise blocking over 82dB while minimizing interruption of ambient hearing EarShield*s Ranger Electronic Pro Earmuffs really do, do it all (except pull the trigger). These electronic earmuffs offer protection against harmful noise coupled with an ultra-fast attack time for uninterrupted hearing of ambient noise * like range commands.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }