Sanwa Supply Bluetooth Trackball, Quiet, 3-Button, Optical, MA-BTTB130BK

A trackball is a device that allows you to control the cursor by rolling the ball with your finger. It is a thumb-operated type that can be used in a relaxed state without exerting any force. It has an ergonomic shape that fits easily with just your palm. It uses a medium-sized 34mm ball that is just right for moving with your thumb. The cursor speed can be switched between four levels: 600, 800, 1200, and 1600 counts. Silent switches are used for the left and right buttons, wheel (scroll) button, and count switch button. It supports the Bluetooth Ver. 5.1 standard and can be connected to a computer with built-in Bluetooth without a receiver. Stable data communication is possible over a wide communication range of 10m radius. It can also be used on Android smartphones and tablets. Silence: Yes