Specifications:1. Item type: Ergonomic Optical Mouse2. Resolution: 800dpi;1600dpi;2400dpi.3. Button: 4 buttons and 1 wheel (middle  button)and dpi(adjusrable)4. Maximum operating range: 10m5. Charging cable Length: 70 cm6. Color: Black, Red7. Material: ABS8. System Requirements: Windows 98/Me/2000/XP/Vista/Win 7/Win8 or latest. 9. Item weight: 140 (Including the charging cable and USB receiver weight)10. Item size: 11.3*8*6.2cm11. Package size: 11.8*8.8*7.6cm12. Package weight: 168g (Including the weight of the packaging box)Features:1. 2.4GHz Wireless Connectivity (USB receiver & rechargeable mouse usb cable included)2. Built in rechargeable battery(1200MA)3. Ergonomic designed to remit and prevent  carpal tunnel syndrome.4. Optical laser technology for precise control5. User convenience with wow-pen's signature, pen-grip comfort.6. L/R mouse buttons, 2 thumb buttons, and a clickable scroll wheel , dpi button.7. You pick the hand position that best suits you. Plug and play, compatible with for Mac and PC Package included:1 x Mouse1 x USB Power Adapter1 x USB Charging Cable