The Jelly Comb Wireless Trackball Mice is on offer at Amazon for $25. This drop from $40 reduces the price by 43 percent.
You no longer need to move your arm for the movement of the cursor with the smooth and precise trackball. Instead, your thumb will control the cursor. It will effectively reduce your wrist and arm fatigue and strain.
You can connect up to 3 different devices at the same time, switch freely between Android, tablet, and Mac with just one button. This ergonomic wireless trackball mouse has dual connection modes BT 4.0 and 2.4G wireless (USB Nano Receiver stored in the mouse bottom).
The 600mAh lithium battery is built into the Bluetooth Trackball Mouse. No batteries need to be changed. Each full recharge can last for 1 month. If you have not used it for a long time, please remember to turn it off.
3 DPI level 1000/1600/2400 that can be adapted to your activity, easily change the cursor sensitivity. Give fantastic use of quick reaction, smooth monitoring, and accurate movement experience.
Works universally with Windows, Android, Laptop Desktop, Mac OS PC, etc. Windows / Android / MAC OS system is working with Bluetooth mode, not taking on any USB interface. 2.4GHz model works with a laptop, a desktop, or any USB port device, just connect a USB Receiver to a USB port.