Item Type: Wireless Mouse_x000D_ Model: G835_x000D_ Material: ABS_x000D_ Mouse Type: Ergonomic Optical Mouse_x000D_ Resolution: 800,1200,1600,2400DPI_x000D_ Button: 6_x000D_ Working Distance: Approx. 10m / 11yd_x000D_ Battery: 2 x AAA Battery (Excluding)_x000D_ Rated Voltage: DC 1.5V_x000D_ System Requirements: For Windows ,for Vista OS X or Newer12.4GNz Wireless Connection: 2.4GHz wireless connection, wireless mouse, 2.4GHz game mouse 2Feel Comfortable: Ergonomic design, can reduce hand fatigue, comfortable to use 34 DPI Adjustments: 4 kinds of adjustable DPI options 800,1200,1600,2400dpi make your game experience more pleasant 4Optical Technology: Control optical technology. Mouse button, left button, right button, scroll wheel, DPI, forward and backward can be operated 5Power Saving: Plug and play, compatible with OS X and PC. the mouse has no color lights and saves more powerShipped without battery1 x Wireless Mouse 1 xUSB Receiver