5-Button Wireless Rechargeable 5D Optical Scroll Mouse (Silver/Black) 5-Button Wireless Rechargeable 5D Optical Scroll Mouse General Features: Silver and black color 5D Wireless mouse Five (5) Programmable buttons Scroll wheel (acts as third button) Optical sensor technology 2.7 GHz wireless technology 800 dpi resolution 256 changeable link IDs Connect and Charge LEDs Includes two 1.2V, 600 mAh AAA Ni-MH rechargeable batteries included 43-inch USB cable length, approximate)