?Reducing Wrist Pain? ECHTPower vertical ergonomic mouse is dedicated to improving and reducing hand fatigue. The vertical mouse can keep the wrist and forearm in a healthy posture, reduce muscle strain, and effectively improve the wrist pain caused by using the mouse for a long time. Reject the "mouse hand"! ?Meet Your Daily Needs?3 Level adjustable DPI-1000/1600/2400. It can easily meet all your daily needs, such as office, entertainment, games, etc. The forward/back buttons can help you organize pages faster. Note: There is a layer of blue plastic on the anti-skid pad at the bottom of the mouse, please tear it off before use. ?Plug and Play?There is a Nano USB receiver at the bottom of the mouse, you don’t need to install any drivers to plug and play! This vertical mouse can be used with Windows XP / Vista / 7/8/10 / Linux and Mac OS X. ECHTPower is designed to facilitate your life. ?Rechargeable Tech?This vertical mouse is equipped with a rechargeable battery, and you can directly charge it through the USB cable(included). This ergonomic mouse uses power-saving technology and can last for several months on a single charge. Never worry about frequent battery replacement any more. ?Wide Compatibility? The wireless mouse supports all devices with USB ports, such as PC, laptops, Mac and other devices. (Note: The Forward/Backward buttons are unavailable in Mac OS X.)