Feature: 1. COMPACT AND PORTABLE: The wireless mouse is designed for small to medium sized hands for the best fit and comfort. The portable design makes it easy to store in your travel bag. 2. QUIET AND SOFT CLICK: The mouse's responsive keys and scroll wheel provide a very soft click with less noise and no more disturbing others, giving you a comfortable using experience. 3. 2.4G RECEIVER AND ADJUSTABLE DPI: The travel mouse comes with a nano receiver (stored in the mouse). 2.4GHz wireless technology ensures a reliable connection up to 49 feet. 3 adjustable DPI levels (800, 1600, 2400) to meet your different needs. 4. UNIVERSAL COMPATIBILITY: The wireless optical mouse is suitable for Chromebook, for XP, for OS X 10.4 or later, for Linux, for Android, etc. Suitable for laptops, desktop PCs, etc, (only connect to devices with USB A port). 5. INTELLIGENT SLEEP MODE: First level standby after stopping operating for 36s, enter deep sleep after stopping operating for 66s, wake up by pressing any key, energy saving and power saving. Specification: Item Type: Wireless Mouse Material: ABS Battery Type: 1 x AA Battery (Not Included) DPI: 800, 1600, 2400 DPI. Package List: 1 x Wireless Mouse1 x Receiver 1 x User Manual