Meet the high-precision mouse that’s built for ultimate comfort, endurance, and versatility. With extra controls, a dual-mode scrolling, and adjustable dpi tracking, M720 gives you the power to tackle any task. Two ways to connect and multi-device capabilities keep you in your flow, even when working between two or three computers.The sculpted shape and up to 2 years Battery life may vary based on use and computing conditions. of battery life ensures that you can keep doing the precise, high performance work you do-all day long. The full-sized, contoured shape follows the natural curve of your hand, providing perfect palm support, so you can stay productive longer. This right-handed design also features soft rubber coating so you can work comfortably for long hours — at home or at work. Scroll better, track better, and get more done. The dual-mode scrolling lets you switch between speed and precision, so you can fly through long webpages, or go line-by-line with a switch of a button. You can also scroll horizontally with the tilt-wheel—perfect for large spreadsheets, big images, and web pages. High-precision tracking gives you superior cursor control on almost any surface with adjustable dpi.