[(Cost-Effective Bundle Set)] - What you will get? A GMAWBTTB138 dual mode(Bluetooth 5.1 + 2.4G Wireless) trackball mouse and a 44mm replacement ball. With this trackball mouse, you will not need to mouse around to move the cursor as finger controlled trackball stays in one place. Not only work on flat surfaces, but also on your leg, sofa and other surfaces as well. A full control of everything is within your fingers.
[(Programmable Buttons with Functions)] - This mouse with ball supports left/right click, forward/back, you can custmize those buttons for different functions when download the driver software. 4 level DPI switchable: 600 / 800 / 1200 / 1600. Noiseless click on left and right buttons, suitable for late-night PC operation, uasing in quiet places such as public places, library, hospital or meetings.
[(Work with Optical Sensors)] -This replacement trackball provides excellent optical sensors sensitivity. Comfortable for finger control and ensures a smooth & agile move
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