Nulea M514 Vertical Trackball Mouse, Ergonomic Wireless Thumb-Control Mouse with Quiet Clicks, 3 Device Connection (Bluetooth & USB Receiver), Rechargeable for PC/Mac/Laptop/Tablet,Blue

["Nulea MErgonomic 65° Comfort Design：The vertical mouse features a perfect 65° ergonomic angle that keeps your wrist and arm naturally relaxed. Sculpted shape with wave-textured surface fits your palm seamlessly, offering ultimate comfort and effortless control all day.514 Wireless Trackball Mouse","Thumb-Controlled Trackball: Navigate with ease using your thumb on this wireless mouse, reducing hand and arm movement. Helping to minimize strain and fatigue,the office mouse is perfect for long hours at the desk.","Smart Infinite Scroll: The ergonomic vertical mouse features an advanced infinite scroll wheel that automatically switches between precise and fast modes based on scrolling speed. It supports smooth 4-way scrolling for effortless navigation through long pages—just a gentle spin.","Multi-Device Connection: This wireless mouse connects via Bluetooth or the included USB receiver. Pair with up to 3 devices and switch instantly at the tap of a button—no need to re-pair for a seamless workflow. Compatible with Compatible with PC, Mac, laptops, tablets, and phones.","True Silent Control: Experience a completely noise-free operation with this cordless mouse. From the trackball to every button and scroll wheel. Perfect for shared spaces, late-night work, or anyone who values total focus without distractions.","3 Adjustable DPI Levels: Choose from 3 sensitivity levels (600/800/1000DPI) for precise control or faster movement. This trackball mouse is ideal for drawing, editing, multitasking with different screens, and everyday office work.","Work Anywhere, Effortlessly: Trackball navigation lets you work precisely on any small surface, like a small café table, plane seat tray or your sofa at home. No need for extra space or a mouse pad. This wireless vertical mouse for laptop and PC is your reliable work companion."]