Can be controlled by one key: power switch Enjoy 2.4G wireless technology, office casual games applicable Innovative aluminum side roller design Vertical side horizontal operation design, bid farewell to the "mouse hand" Wireless receiver, can be received within 10 meters of wireless How to use: Open the battery cover and remove the micro receiver installed on the bottom of the mouse. Plug the receiver into your computer's USB port. Specification: Brand: HXSJ Vertical mouse Model: T32 Wireless technology: 2.4GHz Wireless distance: 10m Item SizeL130*W80*H55(mm) Micro switch life: 10 million times Number of keys: 6 keys Battery type: 1 * AA battery (not included) Work method: Photoelectric Rated voltage / current: 1.5V/5mA Four-speed DPI switching: 800~1600~2400~3600DPI System Requirements: for Windows 98/Me/2000/XP/Vista/Win 7/Win8/Win10 or latest Package included: 1 x Wireless Gaming Mouse 1 x USB Receiver 1 x English and Chinese Manual Other items not included