The Aquaracer is TAG Heuer's dive watch and one of its best sellers — 200 or 300 metres of water resistance, a screw-down crown, and a case that was always meant to get wet. That also makes it the TAG that benefits most from a rubber strap: the factory itself sells current Aquaracers on rubber, so swapping off the bracelet is not a modification, it is a configuration the watch was designed for.
But before we talk colours, we have to talk sizing — because the Aquaracer has the most confusing strap sizing of any popular watch line on the market, and ordering by model name alone is how straps end up going back in the post.
Aquaracer Strap Sizes: Check the Reference, Not the Name
Unlike most watch families, the Aquaracer does not use one lug width. It does not even use one lug width per case size — two 40mm Aquaracers can take different straps. The only reliable guide is your exact reference number, which you will find engraved on the caseback or printed on your paperwork.
Here is the map for the most common references:
| Aquaracer family | Case size | Strap width |
|---|---|---|
| Professional 300 (references beginning WBP201, e.g. WBP201A) | 43mm | 21mm |
| Professional 300 Date & GMT (WBP5111, WBP5115) | 42mm | 21mm |
| Professional 200 automatic (WBP2110, WBP2111) | 40mm | 20mm |
| Professional 200 Solargraph (WBP1180) | 40mm | 21mm |
| Previous-generation Calibre 5 (WAY201x, WAY208x) | 41–43mm | mostly 21mm — some PVD and titanium versions take 22mm (confirmed on the titanium WAY208C) |
| Quartz chronograph (CAY1110) | 43mm | 22mm |
| Older quartz and smaller models | various | often 20mm — ladies' models run narrower (17mm on many); verify per reference |
Two more things worth knowing. First, the Aquaracer's known half-sizes both resolve to 21mm: the ceramic-bezel 43s that measure about 21.5mm take a 21mm strap in practice, and owners who have measured cases at roughly 20.5mm report that a 20mm strap sits loose with the spring bars showing, while 21mm fits properly. When in doubt between two sizes on this range, 21mm is the answer. Second, if your reference is not in the table above, do not guess: measure the gap between the lugs, or message us with your reference number and we will confirm the size before you order.
Where to Buy, by Width
If your Aquaracer takes 20mm or 22mm, go straight to our fitted TAG Heuer Aquaracer rubber straps and select your width on the product page.
If your Aquaracer takes 21mm — and that includes the current Professional 300, the watch most people mean when they say "Aquaracer" — you need a width most of the strap industry simply does not cut. The big generic ranges are made in 20mm and 22mm and skip the odd sizes entirely, which is why so many Professional 300 owners give up and stay on the bracelet. Our curved-end FKM rubber straps are cut in 21mm, the curved end follows the line of the case instead of leaving a gap at the lugs, and because they are rubber, the lifetime warranty applies in full.
A Little Background
The Aquaracer's story starts with the Ref. 844 of 1978, the brand's first purpose-built dive watch, which grew into the 2000-series through the 1980s and 90s before the Aquaracer name arrived in 2004. The recipe has barely moved since: unidirectional bezel, screw-down crown, serious water resistance, luminous markers, sapphire crystal. Collectors like it for exactly that honesty — it is a real tool diver at attainable money, and it has never pretended to be anything else. The right strap keeps it working like one.
The Best Straps for the TAG Heuer Aquaracer
On a diver, let the bezel make the colour decision. The dial on most Aquaracers is black or blue regardless — the bezel is where the watch declares its colour, and the strap should agree with it.
1. Black Rubber — the factory configuration
Black is what TAG puts on the Aquaracer when it ships it on rubber, and it is one of the most popular choices among Aquaracer owners for a reason: it works on every bezel, every dial, every occasion. Our black rubber strap for the TAG Heuer Aquaracer keeps the watch looking exactly as intended while shrugging off salt water, sweat and sunscreen — everything the bracelet quietly resents.
2. Blue Rubber — for the blue bezels
If your Aquaracer wears a blue bezel or blue dial, a blue rubber strap is the tonal move — the watch reads as one designed object rather than a watch with a strap on it. Blue is the Aquaracer's second colour after black, and this is the pairing that shows why.
3. Brown Rubber — the off-duty one
TAG has made Aquaracers with smoked brown sunray dials, and brown suits the watch far beyond those references: a brown rubber strap softens the diver into an everyday watch without giving up any of rubber's practicality. It is the pick for anyone who wears their Aquaracer more in the office than in the ocean.
4. Curved-End FKM in 21mm — for the Professional 300
If you own the current Professional 300, this is your answer to the 21mm problem. Start with the black curved-end FKM rubber strap in 21mm — black is the safe first choice here too, and the curved end sits flush against the case the way a dive strap should. If your Professional 300 wears a blue bezel, the black LuxLine® strap with a fine blue line picks up the bezel colour without becoming the loudest thing on the wrist. Lighter summer colours in the same widths live in the curved rubber collection.
Buckles and Fitting
The fitted Aquaracer straps ship with your choice of buckle — a deployant in silver or black — or select "No Buckle" and keep using your original TAG Heuer buckle, which these straps are compatible with. The curved FKM straps likewise come with your selected buckle and spring bars. Spring bars are included across the range, and if you want the swap to take two minutes instead of ten, add the matching installation tool to your order.
The Bottom Line
The Aquaracer only has one real strap problem, and it is sizing — everything after that is easy. As one of the leading names in aftermarket straps, Helvetus covers every width the Aquaracer family uses, including the 21mm the rest of the industry skips. Every rubber strap carries a lifetime warranty, shipping is free worldwide with no import costs, and more than 50,000 customers already trust us with their watches. Find your reference number, pick your width, and give the Aquaracer a strap built for the water it was named after.
