Table of Contents
Overview
So, TAG Heuer has rolled out the latest updates to their Aquaracer Professional 300 series. I’ve had the chance to tinker around with these, and I’m here to give you the lowdown on what’s new and why these might just be your next favorite dive watch.

Design and Specs: Straight from the Bench
- Case Size: They’ve trimmed it down to 42mm from 43mm. Feels better on the wrist without losing that robust feel—a nice touch for those who thought the previous models were a tad clunky.
- Thickness & Build: The date model sticks to a neat 12mm, with the GMT pushing a bit thicker at 13.45mm. Solid build, but not overly hefty.
- Lug Width: Holding steady at 48mm. It’s a good balance, not too wide but gives enough presence.

Under the Hood: The TH31 Movement
- The Heartbeat: We’ve got the TH31-00 for the date models and TH31-03 for the GMT. I’ve spent some time with both as well as previous Tag Heuer watches, and here’s what stands out:
- Power Reserve: 80 hours. Yeah, you read that right. Leave it off for a weekend, and it’s still ticking strong.
- Accuracy: Ticking at 28,800 vibrations per hour, or 4 Hz. That’s your assurance for precision.
- COSC Certified: Precision isn’t just a claim; it’s certified. These movements don’t mess around.
- Guts and Glory: From the tech docs—Fixodrop, 9010, HP1300 oils, and 9415 grease are in play here. Plus, Nivaflex in the mainspring? That’s some top-tier stuff for durability and smooth power delivery.
Looks That Work
- Dial It In: Black, blue, and green options with a cool ripple effect like light on water. It’s subtle but sharp.
- Bezel Basics: Now sporting a ceramic bezel. It’s tougher, scratch-resistant, and keeps the watch looking new for longer.

Built Tough
- Dive Ready: Waterproof to 300 meters. Whether you’re actually diving or just showering, this watch has got you covered.
- Night Vision: Those hands and indexes are coated with Super-LumiNova. You can catch the time in the darkest depths—or just find it on your nightstand.

Pricing and Competition
What’ll It Cost? Date models start at $3,600 on a rubber strap, climbing to $3,800 on steel. GMTs? $4,000 and $4,200 respectively. Positioned to spar in the $3,500-$4,500 range against the likes of Tudor, Longines, and Oris. With these specs? It holds its own.
Final Thoughts
The 2024 TAG Heuer Aquaracer Professional 300 series is a standout for sure. Blending classic lines with some serious modern upgrades, it’s a diver’s dream and a watch enthusiast’s delight. My take? The TH31-00 movement really shows its mettle—reliable, robust, and refined. If you’re looking for a watch that feels as good as it looks and performs even better, you might want to give this one a look.
For more details, check it all out on the TAG Heuer Official Website
Dive deeper into the details with TAG Heuer Aquaracer Professional 300 Overview

