Sanwa Direct Trackball Ergonomics Mouse Quiet Wireless Bluetooth with Rechargeable 2.4GHz [Equipped Back/Forward Button] 400-MAWBTTB190BK

This is an ergo-shaped trackball mouse that fits perfectly from your thumb to your little finger. The exquisite curved shape makes it easy to grip and reduces the strain on your wrist. It supports two types of connection methods: Bluetooth connection and 2.4GHz wireless connection. You can operate multiple devices while easily switching with the switch on the bottom. Equipped with back and forward buttons that are convenient for web browsing. All buttons are quiet so you can use it without worrying about your surroundings. In addition, the frequently used back button has been placed in a position where it can be easily operated with the index finger. It is rechargeable and does not require batteries, and can be charged using the included Type-C cable. This is a ball mouse that allows you to adjust the cursor speed in 3 stages: 800, 1200, and 1600 depending on the purpose. It uses a medium-sized ball that is easy to operate with your thumb. You can easily clean it by removing the ball from the back of the mouse.　　 ■Warranty period: 1 year from the date of purchase Tendonitis prevention mouse ball wireless mouse track recommended with mouse trackball trackball mouseball cad mouse mouse trackball ball track mouse/trackball gaming mouse ergonomic mouse vertical mouse tenosynovitis mouse that won't make your hands tired Ergo mouse vertical ergonomic no fatigue vertical ergonomics