eirix Wireless Trackball Mouse: Ergonomic Mouse Easy Thumb Control Precise & Smooth Tracking with 5 Levels Adjustable DPI, BT or USB Connection Compatible for PC, Laptop, Windows and MAC OS

• UPC   747992526551
• 【True ergonomic trackball mouse】Move your cursor by the smooth trackball instead of moving your wrist and arm. Smooth and precise thumb control allows your wrist and forearm to relax. The researched optimal ergonomic angle and shape naturally fits the palm of your hand, giving it optimal support 【Precise & Smooth Tracking】You only need to turn the trackball with your thumb to achieve precise and easy control. With no mouse pad needed, you can get your work done on any material surface as well as in tight workplace, such as sofas, carpets, busy desks, etc. Our trackball mouse helps you to be more productive 【Wireless trackball mouse】To avoid the trouble of being tied by wires or cables, Connection the Bluetooth or USB receiver into your computer and ready to use (Connect up to 3 devices). Switch easily between them by the button on the bottom to improve your efficiency 【5 level adjustable DPI】The DPI button allows you to quickly switch between 400/800/1200/1600/2400 five level DPI to meet the precision needs of different screen sizes and scenes 【Compatible with Windows and MAC OS】Wireless mouse for carpal tunnel compatible with Windows 7/8/10, XP, Vista 7/8, Linux, Mac OS. Fit for Notebook, PC, Laptop, Computer and other device.(NOTE : If the mouse can not work, please check if the battery is out of power. Have any question, please feel free to contact us, we will provide in time after-sale service)