The Walker's Razor Walkie Talkie features a Voice Activated Transmit (VOX), allows for hands-free communication up to 3 miles. Walkie Talkie Attachment has 22 channels and 99 sub channels for your family and friends to join!FeaturesCustom designed to integrate onto the Walkers Razor muffs (Muffs sold separately, will not work with Razor Quads)2-3 Mile rangePush to Talk/Voice ActivatedPowered by 2 (AAA) batteries includedBattery Life: 12 hours22 Channels