The portable, ambidextrous Lenovo Wireless Laser Mouse is perfect for anyone looking for a compact mouse to use every day and while on-the-go. Scroll through documents, spreadsheets, and more with increased accuracy and control with its high-definition laser sensor. An advanced power management system, a high-efficiency laser sensor, and an off switch help to maximize your battery life.Size designed that balances ergonomics with comfort and portability Exclusively contoured for both right and left-handed usage with soft touch finish for all-day use 1600 dpi resolution, Laser sensor Works on most surfaces; no mouse pad required 4-way scroll wheel which also works as button and function can be changed via driver 2.4GHz wireless technology Micro-size USB receiver stores neatly inside the mouse for travel Unique battery compartment with hinge design securely holds and eases battery removal and installation Includes two high-capacity AA battery (in box for most countries) Battery life indicator