Full-Size Ergo Mouse - Following the hand's natural curve, a soft rubber grips, broad palm area, and sculpted sides for extra grip greatly enhance comfort and relieve hand and wrist strain. 5 Adjustable DPI - UGREEN wireless mouse has 5 adjustable DPI levels (4000/2400/1600/1200/800), you can freely choose the cursor speed to meet various needs of gaming, office, home and more. Ultra Quiet Mouse - This wireless computer mouse for laptop is designed with low noise, which can reduce click sound by 90%, which is super quiet whether clicking a button, scrolling or moving the mouse, making it an ideal computer mouse for meeting room, library, bedroom. 18-Month Battery - UGREEN wireless mouse has an extended battery life of up to 18 months. Practically eliminate the need for replacement batteries. A smart power-saving chip and an auto-sleep mode extend battery life further. (Note: The computer mice is powered by a 1AA battery, not included) Broad Compatibility - Compatible with Windows 7/8.1/10/11/XP, macOS, Linux, Chrome OS, and Android. Works with a laptop, computer, PC, MacBook, Chromebook, tablet, notebook and more.