Features: Cranking for power, no external batteries are needed, store energy by built-in rechargeable battery, green, environmental friendly, economy, safety, (the common battery will leak easily), reuse limitlessly Low power consumption, you can also crank for listening to the radio when battery goes dead Low noise but high efficiency Low power consumption Long working time Adopts high quality radio circuit with high sensitive FM/AM radio that can catch every wonderful electric wave anywhere and anytime Simple outline and delicate appearance Functions: Cranking for power generation FM/AM radio Charged by external power source Splash-proof function, IP44 Support bracket and hanging hook Size: 135 x 74 x 45mm Weight: 216g