Nulea M509 Trackball Mouse Wired, Ergonomic Design, Easy Thumb Control, Precise & Smooth Tracking, 2-in-1 Interface (Type A &Type C), Compatible for PC, Laptop, Mac, Windows(Red).

Customers find the trackball mouse works well right out of the box and appreciate its ergonomic design that eases wrist and finger stress. They consider it good value for money, with one customer noting it's better than competitors like ProtoArc and Perixx. The trackball and connectivity receive positive feedback, with customers describing it as a solid workman's mouse that plugs and plays seamlessly. The smoothness and button responsiveness receive mixed reviews - while some find the movement smooth and buttons responsive, others report the trackball doesn't roll smoothly and buttons don't work at all.