Logitech Play Collection M325c Mouse - Optical - Wireless - Radio Frequency - Lemon - Usb - 1000 Dpi - Tilt Wheel - 5 Button[s] 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