Mice & Trackballs ERGONOMIC TRACKBALL MOUSE: With the smooth and precision trackball, your thumb will control the cursor, no need to move your wrist. It will reduce fatigue and strain for your wrist. BLUETOOTH & 2.4G WIRELESS CONNECTIONThis ergonomic wirele trackball mouse has dual connection modes BT 4.0 and 2.4G USB, you can connect up to 3 different devices at the same time, switch freely between Android, tablet and Mac. (USB Nano Receiver stored in the bottom of mouse) USB-C PORT RECHARGE: With built-in 600mAh lithium battery, this wirele ergonomic mouse can last 1 month after a full recharge, no need to replace battery. Note: Please remember to turn off mouse if you do not use it for a long time. WIDE COMPATIBILITY: Works with PC, Laptop, Desktop, Windows, Android, Mac OS. 2.4GHz mode works with devices with USB port, plug and play. Bluetooth mode works with Windows/Android/MAC OS system, wont occupy any USB port. 3 ADJUSTABLE DPI: 3 adjustable DPI (1000/1600/2400), you can change the cursor sensitivity to meet your need. Precise movement, fast response, smooth tracking. WIDE COMPATIBILITY Works with Windows, Android, Mac OS, PC, laptop, desktop, wirelely from up to 33 ft (10m) CONNECT UP TO 3 DEVICES With 2.4G USB/BT1/BT2 wirele connectivity, this wirele mouse can connect up to 3 devices at the same time. Click mode switch button to switch among them. A THUMB-OPERATED TRACKBALL No need to move the mouse when working, just use your thumb to turn the trackball to control the cursor movement, so there is no fatigue with your hand TYPE-C CHARGING Built-in 600mAh lithium battery, no need to replace battery for the rollerball mouse. Charging via included type C cable, a full charge would last for 1 month. ERGONOMIC DESIGN The ergonomic mouse can ensure your hand in a natural position, keeping your hand relaxed. More comfortable, le fatigue. IDEAL FOR WORKING This wirele trackball mouse lets you work and play wherever you want, you nerver worry about not being able to use the mouse on a rough surface. Your work efficiency will be improved.