Appliance: mobile phone,power bank,igniter,battery,toy,earphone,mouse,LED etc. Weight: 250g Dimensions: 52x38x90mm Before you decide to buy this crank generator, please kindly read the guidance: 1. There are supper capacitors for energy storage insides. Please crank for 2~3 minutes with 1~2rps speed to feed the capacitors in advance. Then plug in your appliance and continue to crank. 2. The gear box insides is made of nylon plastic material. If you require metal gear, please DON'T buy this generator. Output power: 3W (5V 0.6A, 2rps) 4W (5V 0.8A, 3rps) In order to improve customer experience, we upgraded the handle of the product, which makes it easier to shake the generator when in use, saves effort and does not hurt your hands Colour:Blue Material:Metal Package Contents: 1 x Hand Crank Generator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.