1: Vertical healthy mouse 2.4GHz Wireless Connectivity (Dual-head USB + type-c receiver ) 2: Ergonomic designed to remit and prevent carpal tunnel syndrome. User convenience with -pen's signature, pen-grip comfort. 3: Easy to use, Intelligent connectivity, plug-and-play. 4: L/R mouse buttons, buttons, and a clickable scroll wheel , dpi button. 5: You pick the hand position that best suits you. Plug and play, compatible with for . Project Type:Vertical healthy mouse PRODUCT NAME:2.4G wireless mouse Wireless Technology:2.4G Wireless distance:10m Rated voltage/current:1.2V/20mA Number of keys:6 keys(4 buttons and 1 wheel (middle button)and dpi(adjustable)) Optical resolution:800dpi;1200dpi;1600dpi. Work: Photoelectricity Button click life:8 Million times System requirements:for 98/Me/2000/XP/Vista/Win 7/Win8/10/Vista/FOR OS or latest. Colour:Black Material:ABS Package Contents: 1 * mouse 1 * dual-head receiver 1 * USB charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.