The battery type is 3 'AAA' Batteries. The battery life is of 12 hours. Voice Activated Transmit (VOX), allows for hands-free communication up to 3 miles. Equipped with a wind-proof microphone and short-range antenna, it conveniently clips directly to earmuffs. The Walkers Razor Walkie Talkie Attachment has 22 channels and 99 sub channels for your family and friends to join. Elevate your experience with this shooting muff walkie-talkie, ensuring easy communication while preserving your hearing.