Ergonomic Vertical Design] Unique vertical mouse with special snail bionic design. With special curve backside, thumb groove, delicate buttons layout and anti-skid rubber coasting, all these designs help you easier and more comfortable to adapt the use of vertical mouse, and alleviate arm discomfort and stiffness [Rechargeable and Dual mode connection]: With Built-in 500mAh rechargeable battery, at a single charge, stable use for a week(8 hours/day). Dual wireless-BT 4.0 and 2.4G RF(USB Nano Receiver stored in the mouse bottom), easy shift between Bluetooth and 2.4G wireless mode, adapting different using condition [High Preceision Tracking with 5 Adjustable DPI] 800/1200/1600/2400/4000-5 gear DPI shift via the DPI button. Compared with the traditional mouse normally designed with 1000DPI, with 4000DPI high precision tracking engine, less movement for same tracking, reduce hands fatigue [Removable Wrist Rest] Let your forearm and mouse to be a whole part and make you wrist lift from the ground which protect you wrist from friction when moving the mouse [Wide Compatibility]: Compatible with Windows 7, 8, 10 operating system. Fits for different devices, Laptop, PC Computer, Notebook, Macbook(limited supports to Mac, the side button are not available for Mac) (Compared with traditional mouse, with unique ergonomic vertical design, it may take a few days to get used to using it)