zOwie Omega Discussion Forum

Sounds like you've got the wrong idea what this means.

First, Tantalum is a pure metal on its own merit, not a mix of titanium and aluminum. See the link below for details.

Second, both these watches the titanium case and bracelet parts are the exact same titanium. The only difference in the two is whether the 'gold' trim is really gold or a less costly gold-colored Tantalum alloy.

On the more expensive of these two watches, the trim is genuine 18k yellow gold. That makes the watch a fair bit more expensive, given how much gold trim there is on the watch.

Omega wanted to offer a somewhat less expensive two-tone version of this watch. So they chose a Tantalum alloy. Tantalum has a texture similar to Titanium, but can be alloyed with other metals to give it the color of yellow gold.

The only difference in the Tantalum version is that the 'gold' trim is not actually gold, but a less expensive gold-colored Tantalum alloy. Though I believe the bezel ring with the numbers may still be 18K gold.

So the differences here really are purely cosmetic and cost and have no basis for one being "better" by any other measure. If you really want real gold and don't mind the extra expense, go for the Titanium+18K version. Otherwise, save yourself a little cash and get the Titanium+Tantalum version.