The Digital Razor PRO Electronic Earmuffs as its name implies, utilize advanced digital circuity to provide enhanced clarity of desirable ambient sounds-such as voice, high-frequency steel impact, and environmental sounds like animal movement-while offering improved suppression of undesirable background noise, such as wind. Combined, the Razor PRO’s sound processing makes for a clearer and more comfortable audio experience on the range or in the field. The Razor Digital continues the ergonomic design and diverse functionality of the Razor series with compact ear cups that minimize interference when shouldering long guns, a redesigned headband for hours of comfortable wear, and an easy-to-operate control knob. An auto shut-off function can be set for two, four, or six hours to deliver longer life if the shooter forgets to turn off the unit. Product 1: PROTECT YOUR HEARING – Razor Ear Muffs have an ultra low-profile design featuring extra slim ear cups, for a secure fit; these ear muffs protect against hazardous noises, while still letting you clearly hear everything going on around you Product 1: SOUND AMPLIFICATION – Walker’s Razor Ear Muffs amplify safe sounds using two hi-gain microphones to provide clear omni-directional hearing; The low end frequencies are enhanced to produce accurate, natural sound Product 1: RUGGED DESIGN – These muffs feature a rugged design with a rubberized coating, helping to prevent damage to the interior electronics; the housing is made from a sound dampening composite; the headband is a padded metal wire frame Product 1: EASY-TO-USE CONTROLS – These muffs have a volume control knob on the outside that is slightly recessed – a perfect balance between providing easy-to-use controls, and preventing accidental volume adjustments; the battery door also opens from the exterior Product 2: Protect Your Hearing – Razor Ear Muffs Have An Ultra Low-Profile Design Featuring Extra Slim Ear Cups, For A Secure Fit; These Ear Muffs Protect Against Hazardous Noises, While Still Letting You Clearly Hear Everything Going On Around You Product 2: Sound Amplification – Razor Ear Muffs Amplify Safe Sounds Using Two Hi-Gain Microphones To Provide Clear Omni-Directional Hearing; The Low End Frequencies Are Enhanced To Produce Accurate, Natural Sound Product 2: Rugged Design – These Muffs Feature A Rugged Design With A Rubberized Coating, Helping To Prevent Damage To The Interior Electronics; The Housing Is Made From A Sound Dampening Composite; The Headband Is A Padded Metal Wire Frame Product 2: Easy-To-Use Controls – These Muffs Have A Volume Control Knob On The Outside That Is Slightly Recessed – A Perfect Balance Between Providing Easy-To-Use Controls, And Preventing Accidental Volume Adjustments; The Battery Door Also Opens From The Exterior.