This Wireless Vertical Mouse adopts 2.4G wireless technology which ensures stable connection and offers 3 DPI levels for choice --- 800,1600,2400. What's more,with vertical design,it relieves wrist fatigue to some extent. ・2.4G Wireless Technology:It ensures the stable connection and free you from the twisting cables ・3 Adjustable DPI Levels:There are 3 DPI levels --- 800,1600,2400. Free to switch. It offers you a pleasant sensation of higher speed,less delay and more correct location ・Ergonomic Vertical Design:Compared with traditional mouse,the vertical design relieves the fatigue of your wrist,and offers you comfortable feeling for touch ・Plug and play:No drivers required,just plug USB receiver into USB port of the device,easy to use ・Long Working Time:With built-in large-capacity battery,you can use it for a long time. And it is rechargeable,no need to change battery repeatedly Specification: ・Button:Left,Right,Scroll wheel,Forward,Backward,DPI buttons ・DPI level:800/ 1600/ 2400 ・Battery capacity:1000mAh ・Auto sleep mode:Support ・Supporting system:Compatible with Mac OS/ Windows XP/ Win 7/ Win8/ 10 ・Material:ABS Package included: ・1 x Wireless Vertical Mouse ・1 x Charging Cable ・1 x USB Receiver