Sony Walkman Digital Tuning AM/FM Radio (SRF-M37) Digital AM / FM radio tuner, Stores up to 18 presets (12 FM, 6 AM) 6 shortcut buttons for ease of use Enjoy up to 30 hours of music with a single AAA battery, Easy-to-use button configuration Tuner Features: 87.5 - 108 MHz, LCD Screen, Power: Single size AAA