First Alert Crank Radio with 3-way Power Emergency AM/FM and short wave radio with digital clock and multiple power options Internal NiMH batteries can be recharged by included DC power adapter Can also be powered by 3 AA batteries, or via dynamo hand crank for power in any situation Constructed with a water-resistant, rugged, high-impact plastic case for use in any environment Includes convenient bag with carrying strap for easy transportation, and is backed by a manufacturer's 90-day warranty