Feature: 1. Ergonomic: The vertical mouse allows you to keep your right hand in the normal grip position to avoid wrist discomfort from prolonged use. Perfect for office and home use. 2. Intelligent Wake And Sleep: With automatic sleep and wake function, if it has been stationary for a period of time, the mouse automatically enters sleep state, and you can realize the wake function by any key. 3. Adjustable DPI: Easily adjust the sensitivity of the mouse, 800, 1200, 1600 DPI adjustable, premium optical engine for faster response, smoother tracking and higher accuracy movement. 4. Wide Compatibility: Right handed ergonomic mouse works with PCs, laptops and all devices with USB connectivity, no additional drivers required, plug and play. 5. Durable Design: Supports up to 50 million clicks and provides a better feel than ordinary mice. It features a rubberized matte finish that provides a better grip while resisting fingerprints and stains. Specification: Item Type: Vertical Mouse Material: ABS Color: Black Battery Type: Requires 2 x AAA Batteries (Not Included) Sensitivity: 800, 1200, 1600 DPI Adjustable System Requirements: For Windows 2000 XP CE 7 10, for Linux, for Android Application: Laptop, PC, Tablet . Package List: 1 x Vertical Mouse1 x Adapter 1 x User Manual