Hand Crank Dynamo Micro USB Cellphone Charger Digital Radio Noctilucent Flashlight Siren Streamline body design, compact size,novelty, essential gadgets for family life or other outdoor activities;No external battery is required to generate electricity, environment friendly green products Blink and siren functions are necessary for emergency situations) AM/FM radio digital display tuning, clear with louder and clear speaker, easy to operation; Universal USB port ,can charge various cell phones and other digital products;After fully charged, the flashlight can work 3-4 hours continuously; hand winded for one min, it can work over 10 minutes Three high-luminance LEDs are used to serve as light sources, their lifespan can reach 10,000 hours or higher, ensuring high performance and energy conservation; Compared with solar powered flashlight, hand cranking doesn't rely too much on sunlight and good sunlight condition,lower conversion efficiency(17%), can work all the time such as night and the shade. The internal rechargeable battery has higher capacity 300 mAh, so it can store some power for later use