Amazfit

Amazfit T-Rex Ultra 2 vs the T-Rex 3 Pro: What’s actually different

Thu, 19 Feb 2026 · By Endurance Wire

Since we reviewed the T-Rex 3 Pro not long ago, this comparison is really about how far the Ultra 2 actually moves the needle. The sensors and core experience are largely the same, so the real differences come down to size, battery life and navigation. If you already know the 3 Pro well, the Ultra 2 reads like a more extreme version of the same idea rather than a totally new direction. One of the first things you notice about the T-Rex Ultra 2 is its sheer size. It comes in a 51mm case which makes it the largest watch in the current lineup. This is a step up from the 48mm size found on the T-Rex 3 Pro.