· Cranking for power generation · Solar-energy for power generation · Emergency mobile phone charger · Sensitive FM radio · Blink and siren are helpful in an emergency situation · 3pcs Ultra-bright LED · DC dynamo · Full of useful features make it ideal for emergency · Energy self sufficient via its solar panel & crank dynamo · No exterior battery is needed · Solar panel: 23* 50mm 5.5V 40mA · Built-in battery: Ni-Cd 300mAh 3.6V · Charge time: 36M( Cranking) / 8H( strong sunlight)