This mouse features an adaptive scroll SmartWheel that delivers line-by-line precision, and auto-switches to super fast free spin mode with the flick of a finger. It has a seamless wireless connectivity, customizable side buttons, and a comfort shape. It offers up to 24 months of battery life. Price drops from $39.99 to $19.99 when you apply the coupon code "SELFMADETECH" at checkout. Free in store pickup.