ProtoArc EM01 NL Wireless Bluetooth Trackball Mouse, 2.4G Ergonomic Rechargeable Rollerball Mouse with 3 Adjustable DPI, 3 Device Connection for PC, Mac, Windows, Red Roll

Ergonomic Thumb Mouse: Track precisely with great cursor control on any surface and easy thumb-operated trackball. You no longer need to move your arm for the movement of the cursor. It will effectively reduce fatigue and strain for your wrist and arm.

Adujustable Angle Design: Unique adjustable hinge allows you to customize the trackball angle from 0 to 20 degrees according to your needs for a more natural, comfortable hand position and less muscle strain.

Rechargerable & Adjustable DPI: The Bluetooth Trackball Mouse built-in 900mAh lithium battery. No need to change batteries. It can last 1 month per one full recharge. 5 DPI levels (200/400/800/1200/1600 DPI) allows you to change the cursor sensitivity easily and track more smoothly over a variety of surfaces

Bluetooth & 2.4G Wireless Connection：PLUG and PLAY. This trackball mouse has triple connection modes. You can control three devices at the same time, switch freely between Android, tablet and Mac with just one button. Compatible with Windows, Android, Mac OS PC Laptop Desktop etc

Optimal for Tight Workspaces: Because the trackball doesn't move, it’s excellent for tight workspaces and busy desks and fits in seamlessly alongside your computer and keyboard or laptop. Note: The backward and forward button is not fully compatible with MAC

After using the trackball for a period of time, please clean the trackball and the three white rollers inside the hole to ensure that the trackball is always smooth. Note: When the computer is just started or a large application is running, it may also cause the trackball to not run smoothly

Are you new to trackball mouse? 1. Be patient and give yourself time to adapt to the trackball's unique operating style 2. Experiment with different hand positions to find what is most comfortable for you 3. If you still can't adapt to it after a period of use, please contact our customer service for assistance