Ergonomic Design & Large Size: The real ergonomic shape fits your hand very well, designed with palm, thumb, and little finger rest, which keeps your wrist being in nature position and alleviates the strain and pain on your wrist. The ergonomic mouse fits well for Large hands, may be NOT very comfortable for women or small hands.(right-handed) Silent Click: Left and right click is silent, which makes you conveniently work without disturbing others in the evening at home , or in the library/the coffee house/the office.(NOTE: other buttons are voiced) Compatibility: Works with Windows 8/7/10/Vista/XP/2000, Mac, Linux (NOTE: The side forward/backward button is not recognized on Mac). Plug and play. More Features: 800/1200/1600 DPI, shift by DPI button. Built-in rechargeable Li-battery. 2.4G wireless connection, no wire hassle. The backlight can be separately controlled. The mouse works while charging. Our Service - At AUTLEY, you will get 90 Day Money-back Guarantee, 1-Year Warranty(365-day replacement service) and Lifetime technical support. If any issue with this mouse, please contact us for a free replacement or full refund. We'll reply to you within 24-hour.