Product Overview
A replacement strap for the Cartier Calibre de Cartier Diver, cut for the watch's 23 mm fitment, with a 24 mm option for anyone whose measurement across the lugs comes out wider. Fuerman builds custom fluororubber material watch straps for a long list of luxury references, and this one follows the Diver's proportions — a flat end that meets the case squarely, a traditional pin clasp, and a smooth matte rubber surface that keeps the look sporty rather than showy.
It is the strap for the moment the watch comes back from service without its rubber band, for the original that has gone stiff or started to crack at the lugs, or simply for keeping the strap it came on in the box while you swim, sweat and travel in something you do not have to think about. Fit the buckle, set the pin to your wrist, and the Diver is a watch you put on in the morning and forget about until the evening.
In everyday use it behaves the way a good rubber strap should. It wipes clean after a swim, it holds its shape instead of curling at the tips, and swapping it takes a few quiet minutes at the kitchen table rather than a trip to a watchmaker.
Owners who keep a second strap on hand tend to leave this one on through the months when a watch is worn hardest — holidays, the pool, the gym — and put the original back on for an evening out.
Specifications
| Specification | Detail |
|---|
| Material | Fluorine rubber (FKM) |
| Fits | Cartier Calibre de Cartier Diver 42 mm |
| References covered | W7100055 and WGCA0010 |
| Lug width | 23 mm or 24 mm |
| End style | Regular flat end |
| Clasp | Traditional pin clasp |
| Strap length | 115 mm + 75 mm, two pieces |
| Thickness | 3 mm |
| Weight | 35 g |
| Colors | Black, blue |
| Buckle finishes | Rose gold tone, silver tone, black, or no buckle |
| Supplied | Strap only — the display watch in the photos is not included |
Colors & Buckle Options
- Colour and buckle are chosen together. Because this is a custom fluororubber material watch strap made for one fitment, the hardware is matched to the colour and width you pick — black or blue, each available with rose gold tone, silver tone or black hardware, or with no buckle at all.
- Black. The everyday choice, and the nearest match to the black rubber the Diver was originally supplied on; it disappears against a black dial and lets the case do the talking.
- Blue. A deep blue that echoes the other reference in this family, the pink gold case with the blue dial, so the colour carries from the dial down onto the wrist.
- Rose gold tone hardware. Warms the whole assembly and picks up pink gold bezels, crowns and hands; it is the pairing that looks most deliberate on a two-tone case.
- Silver tone hardware. Keeps the buckle in the same family as a steel case, and it is the quietest option on a blue strap.
- Black hardware. Lowest contrast: the buckle reads as part of the strap rather than as a separate piece of metal.
- No buckle. For owners who already have a traditional pin buckle they want to keep on the watch; the strap arrives without hardware and mounts the same way.
Technical Support & Model Matching
FUERMAN has been supplying watch parts and accessories from Huadu District, Guangzhou since 2010 — 15+ years in the trade, a 60-strong team and a deep ready stock held in China. Our technical team, which includes technicians with 30+ years of watchmaking experience, matches items to your watch by brand, model or reference number before you order, so you know it will fit. Send a photo or a measurement if you are unsure: we will confirm the right choice, talk you through fitting, and stay with you afterwards — troubleshooting, replacement parts and after-sales help long after your order arrives.
FAQ
Q1. Is this a genuine Cartier strap?
No. This is an aftermarket replacement part made by Fuerman for the Calibre de Cartier Diver, and it is not produced by, endorsed by or affiliated with Cartier. The brand and reference names are used only to describe which watch the strap is shaped for. Like the rest of our custom fluororubber material watch straps, it is built to the fitment and proportions of the watch, so it works as a spare or a second strap without hunting down an original.
Q2. Does the strap have a quick-release system, and what do I need to fit it?
No quick-release here — this custom fluororubber material watch strap uses standard spring bars, the same as the strap it replaces, so a spring bar tool is all the hardware you need. There is no adapter to buy and nothing to cut to length. If you would rather not work close to a polished case, a watchmaker can fit it in a few minutes.
Q3. Will the colour look like the photos?
Black is a true matte black and the blue is a deep, dark blue; the surface is matte rather than glossy, so both read slightly darker indoors than they do in daylight. Screens vary, and product color may differ slightly from the pictures depending on your display. If you are matching the strap to a dial you care about, tell us which reference you have and we will point you at the colour we would choose.
Q4. Can I use this strap on another watch with 23 mm lugs?
It will physically sit between 23 mm lugs, but the flat end is cut for the Calibre de Cartier Diver's case, so it is the strap we would recommend for that watch rather than a universal band for any 23 mm case. If you want to fit it to a different dive watch, send us the case reference and the measurement across the lugs and we will tell you whether it will sit the way you expect.
Q5. How do I know when the strap needs replacing?
Two signs: fine cracks around the spring bar holes at the lug ends, and a strap that no longer lies flat when you take the watch off. Both mean the rubber has stopped doing its job. Rinse this fluororubber material watch strap after salt water and check the spring bars every few months, and it will keep its elasticity far longer than a plain rubber band. Replace it at the first sign of cracking rather than waiting for a bar to pull through.
