【Stable 2.4G Wireless Connection】 TopMate M21 (black) mouse wireless uses 2.4G wireless connection which is more stable than bluetooth connection. Plug in the USB receiver(in the back of the pc wireless mouse) and use. Wireless mice’s Effective transmission distance of 32 ft, which can provide reliable connection support for work and entertainment.%ocs%【 Silent Ergonomic Mouse 】 Cordless mouse adopts the quiet button and has a service life of >3 million times. There will be no annoying noise in the process of using. The sleek and full shape of the wireless laptop mouse is more ergonomic. Relieve wrist fatigue, while providing you with a comfortable grip. Perfect balance between your entertainment and work.%ocs%【 Adjustable 3 DPI levels Mice】Wireless office mouse can switch between in 800-1200-1600 3 DPI levels. Change the DPI of the windows mouse wireless, increase the moving distance of the pointer on the screen, improve work efficiency, and meet the needs of office use.%ocs%【Extensive compatibility】Cordless mice with Type C adapter supports Windows XP/7/8/10 and Mac OS X 10.4 for USB & Type C laptops and PC. Mouse for laptop wireless is also compatible with projectors and smart TV.(USB & Type C interface required)More flexible way to use it and get rid of the cable shackles.%ocs%【1-Year Warranty Service】The wireless silent mice provides 1-year warranty service. If there is any quality problem after receiving the product, please contact our online service. We will provide you with satisfactory after-sales service.