ProtoArc EM01 Bluetooth trackball mouse wireless, RGB 2.4GHz rechargeable ergonomic mouse, 5 adjustable DPI, thumb control, adjustable angle, for PC, iPad, Mac, Windows

["Ergonomic Trackball Mouse: With the smooth and precise rollerball mouse, you no longer have to move your arm to move the cursor. Instead, your thumb controls the cursor. It effectively reduces fatigue and strain on your wrist and arm. Note: All buttons are not programmable. The backward and forward button is not fully compatible with MAC devices and browsers like Safari", "Adjustable Angle Design: The unique adjustable hinge allows you to adjust the trackball angle from 0 to 20 degrees to suit your needs for a more natural, comfortable hand position and less muscle strain", "4 RGB Lighting Modes: You can set 4 RGB color effects with one button. Rainbow streaming light (default), rainbow breathing light, neon, color mixing breathing light. NOTE: The RGB backlight can also be turned off by long-pressing the light button to save battery power for the mouse", "Rechargeable & Adjustable DPI: The Bluetooth RGB Trackball Mouse is equipped with a 900mAh lithium battery. Batteries do not need to be replaced. It can last 1 month without RGB backlighting per full charge. Please remember to turn it off when not in use for an extended period of time. With 5 DPI levels (200/400/800/1200/1600 DPI), you can easily change the cursor sensitivity", "Bluetooth and 2.4G Wireless Connection: PLUG and PLAY. Type A USB receiver is not located on the back of the mouse, but in another small inner package. This trackball mouse features triple connection modes. You can control three devices simultaneously and freely switch between Android, tablet, and Mac with just one button. Compatible with Windows, Android, Mac OS PC Laptop Desktop, etc.", "Note: You can download the user manual and FAQ on the detail page (Product guides and documents)"]