Features: 2.4GHz Wireless Connectivity (USB receiver & rechargeable mouse usb cable included) Built in rechargeable battery(600MA) Ergonomic designed to remit and prevent carpal tunnel syndrome. Optical laser technology for precise control User convenience with wow-pen's signature, pen-grip comfort. L/R mouse buttons, 2 thumb buttons, and a clickable scroll wheel , dpi button. You pick the hand position that best suits you. Plug and play, compatible with Mac. Specifications: Item type: Ergonomic Optical Mouse Resolution: 800dpi;1600dpi;2400dpi. Button: 4 buttons and 1 wheel (middle button)and dpi(adjusrable) Maximum operating range: 10m Charging cable Length: 70 cm Color: Black+Red,Grey+ Red. Material: ABS System Requirements:Windows 98/Me/2000/XP/Vista/Win 7/Win8/win10 or latest. Item weight:140(Including the charging cable and USB receiver weight) Item size:12.5*6.5*7.5cm Item weight:92g Package size:15.5*8.5*8.4cm