Come and see our amazing products. The rechargeable automatic mixing cup 12oz is made of stainless steel. The usb cable is used for charging. The automatic mixing cup adopts magnetic force and fluid self-stirring technology to mix the liquid in the cup, and the beverage can be shaken quickly by pressing the switch. The operation is very simple. In addition, we welcome customized logos, please contact us. Pls confirm with us about the packing info, stock color and exact production time before placing your order.