FeaturesLED flashlight and charger for the most common mobile phones (Nokia®) rotating the crank clockwise for one minute will give up to 60 minutes of bright light DC-port device is weatherproof Specificationsrechargeable lithium-ion cell: 3.6V, 80mAH recommended operating speed: 120 RPM, output power 1W under normal conditions: one minute of cranking at 120CPM will recharge the cell capacity up to 40% which makes for 60 minutes of light using one LED and 30 minutes using three LEDs the Lithium-ion can be fully recharged at least 500 times lifespan: used once a week each week, it will last for more than 10 years used with different connectors you can charge the corresponding mobile phones: 3 minutes of cranking will give you up to 2-8 min. of talk time and 20-50 minutes of standby time