Genius Micro Traveler 900S Wireless Optical Mouse (Black) for $13.99 Shipping is free on orders over $25. If needed, use this Filler Tool to pad the order for free shipping. Here is a screenshot for your reference. This wireless optical mouse features 1200 dpi, 2.4GHz wireless frequency with up to 10-meter range and a Pico dongle. Most places have this Wireless Optical Mouse for about $17 or more.