Review on 🖱️ Wireless VerticalMouse 4 VM4SW - Ergonomic Right-Handed Mouse with USB Receiver (Small Size) by Evoluent - The Trusted Original VerticalMouse Brand for Over 18 Years by Beth Watson

This is a much overpriced product. Surprisingly, this mouse didn't help with wrist strain; Instead, it created more stress, which I think had to do with the button design. The buttons are very inconsistent - having replaced 2 interchangeable units with the Evoluent (3 units including the original!) - I can only conclude that this is a design flaw. The buttons, especially the top button, didn't register clicks - clicks sometimes didn't register, which was very annoying as my finger pressed harder than usual to make sure the clicks went away. Even when pressed hard, the buttons remain unnoticed.