Ergonomic Design: Ergonomic design for maximum comfort. The elongated wrist rest gives your hand maximum support for long-lasting comfort. The diamond pattern of the waist surface prevents your palm from sweating after long time handling. Charging and wrist pain are effectively reduced BLUETOTH- AND 2.4G wireless connection - With BT 4.0 and 2.4G two connection modes (USB receiver is located at the bottom of mouse), this vertical mouse can connect 2 devices simultaneously and can be switched with one button Wide compatibility Bluetooth mode supports Bluetooth-enabled devices with Windows/Android/Mac OS system. 2.4G mode supports all devices with USB port. Suitable for PC, laptop, mobile phone, Mac. Forward/back buttons provide convenience for browsing web pages. NOTE: Forward/Backward Buttons DO NOT work on Mac Adjustable DPI and Silent Click 3 adjustable DPI (1000/1600/2400) allow you to easily change cursor sensitivity based on activity and easier to track on a variety of surfaces,
