Sanwa Direct NOVA 400-MATB167 Wired Trackball Mouse, Quiet, 5 Buttons (BackForward)

This trackball mouse can be operated with your fingertips without moving your wrist, reducing strain. The approximately 15° tilt on the body allows for an ergonomic fit with just a light palm-to-hand contact. This is a wired mouse that can be used simply by connecting a USB-A cable to your computer. No drying is required, so you can use it without worrying about remaining battery life. It features a medium-sized ball with a diameter of 34mm that is easy to operate with your thumb. The ball can be easily cleaned by pushing it out from the back. Since it does not require large mouse movements, it can be used comfortably even in limited spaces. This silent mouse features five buttons, including back and forward buttons convenient for web browsing, and all buttons are designed to be quiet. The cursor speed can be adjusted to four levels: 600, 800, 1200, and 1600, depending on your needs. Warranty period: 1 year from the date of purchase