Product Description Double Power Shaking Flashlight Discription: The Max.brightness≥ 50000 MCD Lighing time of 1 LED after 1 minute cranking≥ 30 Minutes Lighing time of 3 LEDs after 1 minute cranking≥ 20 Minutes Using Life: 1. LED: >10000 hours 2. Switch: >5000 times 3. Plastic part: >5 years. 4. The whole unit:>5 years Function: * Electromagnetic energy to generate power : shaking for power generation, no dry batteries needed, green and environmental-friendly,energy-saving. * Lighting model: you can select single LED or three LEDs lighting to meet the need of different occasions.