Lenovo Essential Compact Wireless Mouse- 4Y50R20864 Overview The Lenovo Essential Compact Wireless Mouse, designed with your convenience in mind. It’s easy to get more done when you don’t have to waste time untangling messy cables or searching the office for new batteries. Its compact size makes it the perfect companion no matter what the occasion. Slide it into your pocket, backpack or laptop bag, and you’re ready to go. Key Details Compact and portable design Optical sensor with 1000 DPI resolution 1 AA battery Connection Type: 2.4 GHz Wireless via Nano USB Weight: 50 g (0.11 lbs) Special Design Features: Ambidextrous design Keyboard Buttons: 3 (left click, right click, scroll click) Button Life: Left/right click - Up to 8M clicks: Scroll wheel click - Up to 100,000 clicks DPI 1000 DPI Mouse Sensor: Optical sensor Hardware Requirements: Supported PC with USB port Power Requirement: 1 AA battery Scrolling: Scroll Wheel (up/down) Brand: Lenovo