HXSJ T29 Wireless Bluetooth 3.0 Mouse Ergonomic Design Vertical 2400DPI Mice Features: Bluetooth 3.0 wireless connection technology. Ergonomic designed to remit and carpal tunnel syndrome. Optical technology for control. User convenience with wow-pen's, pen-grip comfort. L/R mouse buttons, 2 thumb buttons, and a clickable scroll wheel , dpi button. You pick the hand position that you. Plug and play,. Specification： Item type: Ergonomic Optical Mouse Resolution: 800dpi;1600dpi;2400dpi. Button: 4 buttons and 1 wheel (middle button) and dpi (adjusrable) Wireless Technoloy : Bluetooth 3.0 connection Maximum operating range: 10m Rated voltage /current:3V/8mA Power supply:2xAAA batteries(not included) Color: Black, Material: ABS Button click life:8 Million times System Requirements: 98/Me/2000/XP/Vista/ Win 7/Win8/win10 or latest. Item size:13x6.4x7.7cm Item weight:87g Package size:15.5x8.5x8.4cm Package weight:125g (Including the weight of the packaging box) Bluetooth connection method： Turn on the mouse power directly. Then search for Bluetooth devices directly in the add device. Click to connect to the Bluetooth mouse,The device has been successfully added to this computer Package Included: 1 x Mouse 1 x English User Manua Note: Desktop computers need to be equipped with a Bluetooth receiver to use. phone is supported.