Logitech M325 Mouse, Wireless Cocktail,  (Cocktail) This Certified Refurbished product is tested & certified by Logitech to work like-new. The product includes all original accessories, and is backed by a 90 day warranty Wireless 2.4 GHz, Optical technology Comfortable, ergonomic design, 3-buttons, Scroll wheel Contoured design, Soft side grips Includes a Logitech Nano Transceiver