Nulea M501 Wireless Trackball Mouse, Rechargeable Ergonomic, Easy Thumb Control, Precise & Smooth Tracking, 3 Device Connection (Bluetooth or USB Receiver), Compatible for PC, Laptop, Mac, Windows.

Customers find the trackball mouse works flawlessly, is ergonomically comfortable, and is good value for money. Moreover, the battery life receives mixed feedback - while some say it stays charged for weeks, others report it only lasts less than a day. Additionally, the connectivity and ergonomics receive mixed reviews, with some praising the Bluetooth connection while others report connection issues, and while many find it fits comfortably in their hand, some mention the cursor moves erratically. However, durability is a concern, with multiple customers reporting it stops working after 8 months of use.