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.Features & benefits:size designed that balances ergonomics with comfort and portabilityexclusively contoured for both right and left-handed usage with soft touch finish for all-day use1600 dpi resolution. Laser sensorworks on most surfaces no mouse pad required4-way scroll wheel which also works as button and function can be changed via driver2.4Ghz wireless technologymicro-size usb receiver stores neatly inside the mouse for travelunique battery compartment with hinge design securely holds and eases battery removal and installationincludes two high-capacity aa battery in box for most countries battery life indicator