This product is intended for teaching/experimental/industrial purposes only and cannot be used for entertainment or to harm others.It is prohibited for children to use, and minors must use it under adult supervision.Use in violation of the rules at your own risk! Model: USB303 Dimensions: 17*3.5*3.5cm (white box packaging) Weight: 85g Material: All aluminum Battery capacity: 200 mAh Custom logo: Supported Provide MSDS, CE, 60825 and other certificates