Item Type: Electric Pencil SharpenerMaterial: Plastic Two Power Supply Methods: USB/battery power supply Product Use Battery: 2 x AA batteries (delivered without batteries) Product Function: Automatic pen sharpening, helping you save time and effort.Size: Approx. 85 x 75mm / 3.3 x 3in 1?��USB/battery dual power supply is not afraid of power failure, and can be used with peace of mind outside.? 2?��With cover open shutdown protection, automatic power off, so that children can reduce the risks when using.? 3?��Large-capacity pen scrap box, easy and convenient to clean and does not require frequent cleaning.? 4?��Replaceable tool holder, increase the service life of the whole machine and ensure the use of the machine body.? 5?��The non-slip soft cushion design at the bottom makes it stable and avoids slipping during sharpening. 6?��Can use the delivered power cord to connect to a computer USB port or a 5V/2A mobile phone charger for power supply.