Built-in radio with switch key and volume adjusting key. Channel memory function, 8 different preset channels. Digital display screen with low battery indicator. Input jack for MP3 or CD player. Auto search and frequency scanning function. Built-in antenna with high reception sensitivity. Extra wide headband with soft padding. Powered by 2 AA batteries (not included). Push to Talk / Voice Activated. Powered by 2 (AAA) batteries included. Battery Life: 12 hours.