Walkers Alpha Muff/Shooting Glasses Combo, D-Max Green 5x Enhancement, power of 50dB 2 wind resistant, high frequency, stereo microphones for precise sound directionality with 2 independent volume controls Sound activated compression and noise reducing rating NRR 24dB 2 Alkaline "AAA" batteries included Glasses: high grade polycarbonate lenses and exceeds ANSI 287.1-2003 high impact requirements