Logitech 910-000150 Cordless Optical Mouse Black - Eliminate snagged and tangled mouse cords, combines reliable cordless performance with smooth optical tracking. USB and PS/2 *This item has a 90 day warranty. *This product is Recertified. A recertified product is one that is returned by a customer, for whatever reason, and then restored to original working condition after undergoing an intensive inspection process by qualified technicians. The recertified product is then offered at a substantially discounted price. All stock of our current products are guaranteed to be in working condition and have been successfully tested for optimal performance. 7 day return policy is in effect for both in-store and online purchases. See in store for more details.