Logitech M325 3-Button Scroll Wheel 2.4 GHz USB Wireless Optical Mouse - Purple Peace (Certified Refurbished) 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 Micro-precision movement with Scrolling wheel Advanced 2.4 GHz Wireless USB Nano Unifying Receiver Up to 18 month battery life (Depends on usage) Comfortable contoured design