Lenovo offers its Lenovo N3903 Wireless Mouse in Coffee, model no. 57Y6666, for $29.99. Coupon code “USP1J36666” cuts it to $10.50. With free shipping, that’s $2 under our mention from last July and the lowest total price we could find by $20. Sales tax is added where applicable. This mouse features a 1,200 dpi resolution, USB transmitter, and more. Two AAA batteries are required, but not included.