Cordless mouse is designed for right-handed or left-handed use with notebooks. Leave the included 2.4 GHz nano-receiver plugged into your notebook's USB port so your mouse is always ready. 2.4 GHz Digital Cordless technology delivers a reliable signal with virtually no delays or drop outs. Store the nano-receiver inside the mouse when you need to free up a USB port. Receiver shuts down when stored to save battery life. Tilt Wheel Plus Zoom allows you scroll side-to-side effortless and instantly zoom in and out of digital photos, spreadsheets and more. V450 Cordless Laser Mouse also features auto-off, a soft textured grip, contoured shape and laser precision so you have smooth cursor control on virtually any surface. PC and Mac compatible mouse includes two AA batteries. Batteries last up to 12 months.