Lenovo N70A Wireless Laser Mouse (Dark Gray) for $19.99 shipped after coupon code USP1A14660. Make sure there is no extra space before and after the code in order for it to work. Here is a screenshot for your reference. The wireless mouse features 1200 dpi, 10M range, a laser sensor and up to 6-monthe battery life per charge. Most places have this wireless mouse for about $35.