This Radio's Nimh Battery Can Recharge with the Built-in Solar Cell, Hand Crank (a Minute of Cranking Can Yield Up to 30 Minutes of Play Time), Or with Conventional Electricity. Plus, It Uses Three Aa Batteries As a Back-Up Power Source. So it's Radio Free You. Enjoy Shortwave Frequencies from 3.8 to 19.2 Mhz, Vhf Television Bands, Am/fm and National Weather Service Bands.