AXIL TRACKR Electronic Earmuffs Black Medium. Clear smooth sound enhancement lets you hear what you want while protecting your hearing from damaging loud sounds. Specifications for AXIL TRACKR Electronic Earmuffs: Manufacturer: AXIL Color: Black NRR: 25 dB Quantity: 1 Size: Standard Battery Type: AAA Battery Quantity: 2 Condition: New Age Group: Adults Features of AXIL TRACKR Electronic Earmuffs 40 dB gain/amplification Audio input jack Autoblocker technology shuts off all sounds over 85 dB. 25 dB SNR (hearing protection) Sound activated compression 0.02 second reaction time Sweat and water resistant Metal wire frame for secure fit Medical grade non-allergenic materials Collaspible design to fit in your bag easily Package Contents: AXIL TRACKR Electronic Earmuffs 2 AAA Batteries AXIL TRACKR-B: TRACKR Electronic Earmuffs Black Medium