AXIL TRACKR Blu Ear Muffs Black One Size. Specifications for AXIL Trackr Blu Ear Muffs: Manufacturer: AXIL Color: Black NRR: 27 dB Quantity: 1 Size: Standard Battery Type: AAA Battery Quantity: 2 Condition: New Features of AXIL Trackr Blu Ear Muffs 40 dB Gain/Amplification Autoblocker Technology Shuts Off all Sounds Over 85 dB. Bluetooth 5.0 for Audio & Phone Calls 27 dB SNR Hearing Protection. Sound Activated Compression (0.02 Second Reaction Time) Audio Input Jack Collapsible Design Gives You Comfort in a Small Sized Ear Muff that Fits in Your Range Bag Sweat and Water Resistant. 2 'AAA' Batteries Included Package Contents: AXIL Trackr Blu Ear Muffs Bluetooth Instruction Card Audio Jack AUX Cord AXIL TRACKRBT-B: TRACKR Blu Ear Muffs Black One Size