2.4GHz Wireless Connection 2.4GHz wireless connectivity, up to 10m wireless receiving distance, suitable for office or casual games. One Key Control The mouse has a power switch key, the mouse can be powered off when not in use. More energy saving, so that the battery has a longer standby time. Innovative Side Roller Design Unique metal roller design for deep tapping of the wheel, more convenient and comfortable when using. Vertical Side Horizontal Operation Design The mouse naturally fits the palm, makes your arm look natural and reduces your discomfort when using the mouse, bid farewell to the ‘mouse hand’. Ergonomic Design The mouse fits the ergonomic design, remits and prevents carpal tunnel syndrome, for maximum hand-feeling and stress-free use. Four-speed Adjustable DPI You can easily switch different DPI via the DPI button.