Razer Mamba Rechargeable Wireless PC Gaming Mouse (Certified Refurbished) [video game] This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty Wired or Wireless: Performs as well cordless as it does corded 6400dpi 4G Dual Sensor System: Laser and an optical sensor to accurately calibrate the mouse to any surface for exceptional tracking Multi-Color LED Lighting: Over 16 million colors to choose from Razer Synapse 2.0 Enabled