ERGONOMIC DESIGN:The upright ergonomic mouse can reduce the damage to your palm joint and your wrist muscles for a long time using the mouse. WIDE COMPATIBILITY:The mouse Ergonomic vertical digital optics is compatible with Mac OS X, Linux and Windows of all versions. This mouse has a nano USB receiver, which can be inserted into the USB port of a laptop or computer to connect. OPTICAL MOTION DETECTION:This HUILINMEI vertical ergonomic mouse is equipped with a high-precision optical sensor, and the sensitivity is adjustable, providing smooth, lag-free operation for smooth and precise gliding on any surface. RECHARGEABLE BATTERY:This mouse without laptop wire uses an environmentally friendly polymer battery to prevent overcharging, battery life, and can be used while charging. Can be used for 3 months on a single charge.