Bluetooth rollerball mice in comparison

Ergonomic Mouse Designed for Optimal Comfort -- This Trackball Mouse is ergonomically shaped to follow the natural curvature of your hand. Its contoured design fits comfortably in your palm, reducing strain on your hand and wrist. Enjoy maximum comfort during extended use

Trackball Mouse Thumb-operated, you can precisely and smoothly move the cursor by rotating the trackball with your thumb without moving your wrist and arm. If you frequently use a mouse in your daily life, it will reduce muscle strain on your wrist and arm. The wireless trackball mouse can freely switch between 0-degree and 18-degree angle using a detachable aluminum alloy base, keeping your palm in a natural position for long-term use without fatigue.

USB 2.0 interface, Plug and play, no software required

TRACKBALL COMFORT - Equipped with a 34mm trackball, you will not need to mouse around to move the cursor as thumb controlled trackball stays in one place. Not only work on flat surfaces, but also on your leg, sofa and other surfaces as well. A full control of everything is within your fingers.

One Year Endurance with a Single AA Battery Just powered by a AA battery, offer it 12 months battery life, forget the hassle of frequently charging High Precision and Adjustable Tracking Up to 2400DPI, 5 levels for setting, adjust on the fly, select the best tracking speed for different working situations

The CSL Wireless Vertical Mouse for LEFT-handed users will free you from an unnatural arm position and the annoying cable connection to the computer. Its ergonomic design supports the natural position of the arm and relieves tennis elbow pain. Your arm and wrist will always be relaxed, even after long hours at work. Wireless connection via 2.4 GHz or Bluetooth means the mouse can be controlled in a space-saving way. Model number 305783

1. Unique Combo A perfect blend of a vertical mouse and trackball, offering the best of both worlds in terms of comfort and functionality. The trackball allows for accurate and smooth cursor movement, enabling precise navigation and control.

Built-in 1.5 large trackball with optical sensor - accurately and precisely tracks with less muscle movement for maximum comfort.

Long Battery Life 2 AA batteries are included in the package,you can place 1 or 2 batteries to use(choose your perfect weight balance). 1 battery can last up to 20 months and 2 batteries can last up to 40 months.(Actual use varies by usage patterns.)

Suitable for notebooks up to 17 inches

ERGONOMIC DESIGN - handheld trackball mouse wireless can greatly avoide the harm of palm and muscle of your wrist for long time using mouse. ATTENTION IF YOUR MOUSE IS NOT WORKING WHEN YOU WENT A FEW MINUTES WITHOUT USING IT, PLS KINDLY CLICK TO WAKE IT UP.IF STILL NOT WORKING, PLS CHECK BELOW ISSUES 1, CHANGE BATTERY AND TRY; OR 2, TURN IT OFF AND ON; OR 3, REMOVE THE USB RECEIVER AND TRY IT.

Y-10W Wireless Trackball Mouse Free replacement and after sale service available, please buy with confidence.