The TAG Heuer Grand Carrera Calibre 36 RS Caliper, reference CAV5115.BA0902, is a discontinued steel-bracelet chronograph distinguished by a rotating Caliper scale for reading tenths of a second. Its high-beat automatic movement is described by retailers as derived from the Zenith El Primero and running at 36,000 vibrations per hour. Published specifications are appealing, but they describe the model—not the condition or water resistance of any particular pre-owned watch.
What is the CAV5115.BA0902?
It is the steel-bracelet version of TAG Heuer’s Grand Carrera Calibre 36 RS Caliper chronograph. Sorelle Ronco describes the CAV5115 as an automatic, COSC-certified chronograph; Urverket’s listing identifies the exact BA0902 reference and a steel bracelet. These are retailer catalog descriptions, rather than a guarantee about a particular example. Sorelle Ronco’s CAV5115 listing and Urverket’s exact-reference listing provide the published details.
How does the Caliper chronograph work?
The Caliper is the watch’s distinctive rotating scale, intended to help read tenths of a second in conjunction with the chronograph. In plain terms, the scale gives the wearer a way to interpret the chronograph’s elapsed-time display more finely; it is a mechanical display aid, not an electronic timer and not a change to the movement’s underlying timing accuracy. SwissWatchExpo’s retailer-produced video, published June 29, 2021, explains the chronograph and scale, while Sorelle Ronco describes rotating systems for chronograph minutes at 3 o’clock and hours at 6 o’clock. SwissWatchExpo’s Calibre 36 RS video.
Movement and published specifications
Retailer descriptions identify the automatic Calibre 36 RS as derived from the Zenith El Primero and operating at 36,000 vibrations per hour. Sorelle Ronco lists more than 50 hours of power reserve; Urverket gives 50 hours for the exact BA0902 reference. A fair summary is about 50 hours, with the retailer figures differing slightly.
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- VERIFY YOUR WATCH MODEL & MEASURE THE CORRECT SIZE USING A RULER – Watch Parts Are Model and Size Specific. Please Verify Compatibility Before Purchasing.
- Compatibility & Size: 22mm Leather Strap, compatible with TAG Heuer Grand Carrera CAV518 16 F1 (Black Red Perforated).
- Ensure Perfect Fit: Verify the size, color, and model compatibility with your specific watch before purchasing to ensure a perfect fit and avoid returns or exchanges.
- Compatibility Check: Double-check your watch's requirements and compatibility details to ensure the product meets your needs. This will help you avoid any issues with returns or exchanges.
- Aftermarket Product: This is an aftermarket/generic made to original factory specs for a precise fit.
| Specification | Published listing detail |
|---|---|
| Reference | CAV5115.BA0902; Urverket exact-reference listing |
| Case | 43 mm steel; Sorelle Ronco and Urverket |
| Movement | Automatic Calibre 36 RS; described as derived from the Zenith El Primero; Sorelle Ronco and Urverket |
| Frequency | 36,000 vibrations per hour; Sorelle Ronco and SwissWatchExpo video |
| Power reserve | About 50 hours: Sorelle Ronco says more than 50 hours, while Urverket lists 50 hours |
| Crystal and back | Anti-reflective sapphire crystal and sapphire caseback; Sorelle Ronco |
| Crown | Screw-down; Sorelle Ronco |
| Water resistance | 100 m / 10 ATM in the model listings; Sorelle Ronco and Urverket |
| Bracelet | Steel bracelet; Urverket exact-reference listing |
The 100 m / 10 ATM figure is a catalog specification, not evidence that an older watch remains water resistant. Seals age, and service history, impact damage, and pressure testing matter for each individual specimen.
Steel CAV5115 versus titanium CAV5185
The related CAV5185 is a titanium variant, not another name for the steel CAV5115.BA0902. Sorelle Ronco identifies its case as grade 2 titanium and describes the line as discontinued. Its material and configuration should not be carried over to the steel-reference listing. The available catalog information does not establish a measured weight comparison or enough detail to claim how either version wears. Sorelle Ronco’s titanium CAV5185 page.
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- Two size options available (22mm & 24mm) – choose the correct lug width for your watch case; 22mm version fits 22mm lug spacing, 24mm version fits 24mm lug spacing, both precision-engineered for Grand Carrera series compatibility.
- Premium natural rubber compound – crafted from high-grade vulcanized rubber, offering exceptional flexibility, sweat resistance, and all-day comfort while maintaining structural integrity in extreme temperatures.
- Secure and adjustable buckle system – equipped with a durable stainless steel tang buckle and precision-cut adjustment holes, allowing for a snug, customized fit and reliable closure.
- Weather-resistant and durable – built to withstand water, UV rays, and daily wear, making it ideal for active lifestyles as well as everyday casual or business attire.
- Complete accessory kit included – comes with matching spring bars and simple installation tools, enabling quick DIY attachment without professional help.
Availability and what to check before buying
This is an older model with specialist-retailer and archived-listing traces. Urverket marks the exact-reference listing sold out, and an archived Watches.co.uk page records historical retail presence; neither establishes current stock in every market or a fair current price. No current seller, defensible market price, or condition-verified example is established by those pages. Archived Watches.co.uk CAV5115 listing.
For any pre-owned example, verify that the watch and listing match the exact reference, then assess the following before relying on the seller’s description:
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- VERIFY YOUR WATCH MODEL & MEASURE THE CORRECT SIZE USING A RULER – Watch Parts Are Model and Size Specific. Please Verify Compatibility Before Purchasing.
- Fits TAG Heuer Grand Carrera Calibre 5: Designed for 22MM TAG Heuer Grand Carrera Calibre 5 watches.
- Ensure Perfect Fit: Verify the size, color, and model compatibility with your specific watch before purchasing to ensure a perfect fit and avoid returns or exchanges.
- Compatibility Check: Double-check your watch's requirements and compatibility details to ensure the product meets your needs. This will help you avoid any issues with returns or exchanges.
- Includes Clasp: Comes with a matching clasp for secure fastening.
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- Confirm the reference and whether the bracelet is the correct configuration; compare any included papers and accessories with the listing.
- Ask for service documentation and a clear account of the watch’s condition.
- Have the chronograph and rotating Caliper scale demonstrated in operation.
- Read the return terms before purchase, especially if inspection after delivery is important.
- If water resistance matters, require a recent pressure test for that specific watch rather than relying on the catalog rating.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
