【Thumb Operation】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. | 【Two Wireless Connection Modes】This wireless mouse offers two connection modes: USB 2.4G wireless mode and Bluetooth mode. It can connect by plugging the receiver into the USB port of your device or via Bluetooth (the device needs to have Bluetooth functionality). It can connect to three devices simultaneously and switch freely between them. For example, you can easily and quickly switch mouse control from a PC to a laptop, tablet, etc. | 【Built-in Rechargeable Battery】This Bluetooth wireless mouse has a built-in 730mAh high-capacity rechargeable battery and comes with a USB charging cable. By connecting the USB charging cable to a device, you can continue using the mouse while it charges, making it perfect for web browsing and office work. (For the best experience, please fully charge the mouse before first use) | 【Ergonomic Mouse】 The trackball mouse features an innovative adjustable angle and an ergonomic curved design. It operates the cursor through thumb rotation of the trackball, ensuring that extended use does not strain your wrist and arm. The forward and backward buttons provide additional convenience and efficiency for everyday web browsing and document editing. | 【Adjustable DPI/Wide Compatibility】The Bluetooth mouse has 5 DPI settings: 800/1200/1600/2400/4800 DPI, allowing you to choose the appropriate DPI according to your needs. It is compatible with Win11, Win10, Win8, Win7, Mac OS, Chrome OS, Android 5.0 or higher, and can be used on desktops, laptops, tablets, and phones.