3-Year Battery Life: This wireless optical mouse features an auto-sleep power-saving mode and on/off switch so you can enjoy up to 3 years (1) of charge on 2 AA batteries Designed for Comfort: Sculpted with comfort in mind; your wireless computer mouse follows the natural curve of your right hand; and all controls are within your reach Hyper-fast Scrolling: Dual-mode scrolling lets you switch between speed and precision with a click; so you can fly through long webpages; or go line-by-line Wireless Freedom: One tiny unifying receiver pairs up to 6 compatible devices; creating a clutter-free workspace; the USB receiver provides a strong; reliable connection within up to 33 feet (3) Extra Productivity: This wireless mouse features 5 customizable buttons; including forward and back thumb buttons; create shortcuts; jump to full-screen; open applications; and more Broad Compatibility: Mouse M705 is compatible with macOS and Windows; and is a Works with Chromebook(2) certified product