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The 2021 Omega Speedmaster Chronoscope is a 43 mm manual-winding chronograph whose defining feature is a dial with three timing scales: tachymeter, telemeter and pulsometer. Robert-Jan Broer’s Fratello review found that its busy, vintage-inspired design grew on him, but he sometimes struggled to read the scales. On his 19 cm wrist it felt at home; that is one reviewer’s experience, not a sizing guarantee. Whether it works for a Moonwatch collector depends largely on whether the Chronoscope’s distinctive dial and hand-wound movement appeal more than the familiar Moonwatch formula.
What is the Speedmaster Chronoscope?
Omega announced the Speedmaster Chronoscope in September 2021. Its 1940s-inspired “snail” dial combines Arabic numerals, leaf-shaped hands and a spiral track with three chronograph scales. Omega described the chronograph as a tool that “typically measures the duration between two points or events.” The scales expand that idea to speed, distance and pulse timing. Omega’s launch announcement sets out the collection’s design and functions.
This review focuses on the 2021 collection and, for the detailed specifications below, the silver-dial steel bracelet reference 329.30.43.51.02.001. Broer’s hands-on account says the Fratello team had two Chronoscopes in its offices; it does not establish that he wore every reference or material variant. His impressions are personal observations rather than a universal wrist-fit or legibility test. Read the Fratello review by Robert-Jan Broer, published 5 October 2021.
How do the Chronoscope’s three scales work?
Tachymeter: average speed over a known distance
Start the chronograph at the beginning of a measured distance and stop it at the end; read the tachymeter to estimate average speed. Broer’s example is timing the kilometre between two markers to read kilometres per hour. The same principle works over a mile for miles per hour. It gives an average over the interval, not an instantaneous speed reading.
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Telemeter: distance to a visible and audible event
A telemeter uses the delay between seeing an event and hearing it to estimate distance. For example, after seeing lightning, start the chronograph and stop it when the thunder arrives. The scale translates the elapsed time into an approximate distance. Omega gives a lightning storm as an example in its launch announcement.
Pulsometer: an estimate of heartbeat rate
Time the specified number of heartbeats and read the pulsometer scale for an estimated rate. Omega says this model’s scale is based on 30 pulses per minute. It is a watch-scale calculation, not a medical device or a substitute for clinical measurement.
Monochrome’s 2021 account also describes a tachymeter on the bezel and a secondary scale set centrally across two levels, extending the useful range for longer intervals. The overlapping tracks are part of what gives the dial its layered appearance—and what can make its information harder to pick out at a glance.
Rank #2
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How readable is the dial in everyday use?
Broer’s main practical reservation was legibility. He wrote, “The only thing I found is that I sometimes struggle to read the scales.” He sometimes needed to squint; he also noted that he wears glasses and characterized his eyesight as not terrible. In his view, the scales may function more as part of the watch’s style than as tools most owners calculate with every day. That is a candid report from one reviewer, not a finding about every wearer.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchThe busy dial took Broer some getting used to, but he said it grew on him after wearing the watch on and off for weeks. That tension is central to the Chronoscope: the scales give it a strong historical-chronograph character, while their density is also its clearest usability compromise. If you expect to read a scale quickly and often, inspect the dial in person if possible.
How does the 43 mm Chronoscope wear?
For the reviewed steel bracelet reference, Fratello lists a 43 mm diameter, 12.8 mm height and 48 mm lug-to-lug measurement. Broer, whose wrist measures 19 cm, said the watch felt at home and praised the bracelet. He compared its feel with 42 mm and 44.25 mm Speedmasters he knows, but that comparison describes his own wrist and experience, not a rule for how a 43 mm watch will fit you.
Rank #3
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He reported a bracelet taper from 21 mm between the lugs to 16 mm at the clasp. The easy-adjustment button on the bracelet he handled extended it by 2.3 mm. Broer cautioned against relying on dimensions alone: “Very often, I still think you need to try a watch before you buy one and don’t go blind on a chart with specifications.” If a shop visit is practical, try the watch on; wrist shape, bracelet fit and your tolerance for a prominent case all affect the result.
What is different about the 9908 movement?
The Chronoscope uses Omega calibre 9908, a manual-winding chronograph. That makes winding part of the ownership experience, unlike an automatic Speedmaster comparison. Fratello lists a 60-hour power reserve for the reviewed reference. Omega’s 2021 launch announcement describes the movement as a Co-Axial Master Chronometer with a column wheel. Monochrome explains the 9908 as an adaptation of the automatic 9900 chronograph architecture for manual winding, retaining the column wheel and vertical clutch; that architecture description is Monochrome’s account, not an independent teardown here.
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Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Fratello’s 2021 specification table also reports magnetic resistance above 15,000 gauss. These are published specifications for the reviewed reference, not results of a fresh independent test. The sapphire caseback makes the decorated movement visible.
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Specifications for the reviewed steel bracelet reference
| Specification | 329.30.43.51.02.001 |
|---|---|
| Case | Stainless steel |
| Diameter | 43 mm |
| Height | 12.8 mm |
| Lug-to-lug | 48 mm |
| Crystal and caseback | Sapphire crystal and sapphire caseback |
| Water resistance | 50 m |
| Bracelet | Steel bracelet with easy-adjustment clasp |
| Movement | Omega calibre 9908, manual winding |
| Power reserve | 60 hours |
| Magnetic resistance | Above 15,000 gauss |
| Functions | Time, chronograph, tachymeter, pulsometer and telemeter |
Specifications in this table are those Fratello published for the reviewed reference in 2021; they are not a new measurement. Fratello’s review and specification table.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What variants were described at launch?
Monochrome’s September 2021 coverage describes six steel configurations: three dial treatments, each available on a bracelet or leather strap. Its listed dial treatments are blue with silver counters, silver with blue accents, and silver with black counters. Omega’s launch announcement also documents a Bronze Gold version with an oxidized bronze dial, brown ceramic tachymeter bezel and brown leather strap. These are launch-era configurations; their present-day catalog availability is not established here.
When comparing versions, consider how the dial color and counter contrast affect the busy scales, whether you prefer a bracelet or leather strap, and whether the steel or Bronze Gold aesthetic suits you. Strap fit and compatibility depend on the particular watch and strap; verify fit and hardware before buying an accessory. For movement comparisons, remember that calibre 9908 is manual-winding.
Best Value
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Monochrome reported 2021 launch prices of CHF 8,300 on leather, CHF 8,600 on steel and CHF 14,000 for Bronze Gold. These are historical figures, not current prices. Fratello’s October 2021 specification table listed €8,600 / CHF 8,900 / $8,650 for the reviewed steel bracelet reference and a five-year international warranty. The Swiss bracelet prices differ between the two publications; neither set of figures establishes a current offer, today’s warranty terms or current availability. Check Omega or an authorized retailer in your market for current information. A searchable reference phrase for the reviewed steel model is Omega Speedmaster Chronoscope 329.30.43.51.02.001, but these sources do not establish current listings or seller authorization.
Does it work for a Moonwatch collector?
Broer’s answer is deliberately personal and mixed. He said the watch could appeal to someone less bound by Moonwatch collector convention, but that he probably would not buy it himself, with the Bronze Gold version a possible exception. His experience suggests the Chronoscope is best judged on its own terms: a Speedmaster chronograph with a more elaborate, vintage-styled dial and manual-winding movement, rather than simply as another Moonwatch dial option.
If the three scales and layered design are the reason you are considering it, see whether you can read them comfortably on the wrist. If you prize a cleaner dial or expect to use the scales frequently and instantly, the density may be a genuine drawback. The 2021 hands-on review establishes one wearer’s positive fit experience and qualified appreciation of the design, not a universal recommendation.
Quick Recap
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