This product is a mixed lot of 10 USB optical mice with scroll wheels, perfect for those in need of a standard mouse with reliable connectivity. Made by the reputable brand Dell, these mice offer easy plug-and-play functionality with their USB connectivity. The optical tracking method ensures precise and smooth cursor movement, while the inclusion of a scroll wheel adds convenience for navigating through web pages or documents. With free shipping included, this lot of mice is a great deal for anyone in the market for quality computer peripherals.