What Watch Did John Glenn Wear? The Heuer 2915A on Friendship 7

Featured image: Smithsonian Institution, CC0, via Wikimedia Commons

John Glenn carried a Heuer stopwatch, reference 2915A, on his historic Friendship 7 flight on February 20, 1962, when he became the first American to orbit the Earth. It was strapped over the sleeve of his spacesuit as a backup timer. On his return to space in 1998, the record points to a stopwatch-style timer rather than a famous wristwatch, and a widely repeated Omega Speedmaster X-33 claim could not be confirmed.

The Heuer 2915A on Friendship 7

When Glenn lifted off aboard the Mercury-Atlas capsule, nearly everything around him had been built specifically for spaceflight. The Heuer was the exception. It was an off-the-shelf timing instrument, a standard Heuer model with a simple, easy-to-read layout, used as a backup to the capsule’s own clock. Glenn wore it fixed to an elastic strap over his suit rather than on a leather band under a cuff, which makes it more of a wrist-mounted timer than a dress watch.

The 2915A is a one-pusher chronograph with a two-register dial (12-hour and 60-minute counters), a single black leaf-style hand, and markers down to fifths of a second. A large onion-style crown and a single pusher handle all the chronograph functions. During the flight the transcript records Glenn starting the “backup clock” shortly after liftoff, which fits with its intended role: an independent way to track elapsed mission time if the main systems failed.

Key facts at a glance

Detail	Information
Watch	Heuer stopwatch / timer, ref. 2915A
Mission	Mercury-Atlas 6, Friendship 7, February 20, 1962
Duration	About 4 hours 56 minutes, three orbits
Display	12-hour and 60-minute registers, fifths of a second
How worn	On an elastic strap over the spacesuit sleeve
Today	Smithsonian National Air and Space Museum collection (shown at the San Diego Air and Space Museum)
Value today	Original is a museum artifact; vintage Heuer timers of this era are scarce and hard to price

Why a stopwatch and not a normal watch?

Early Mercury missions were short and tightly scripted. What mattered was elapsed time: when to start a procedure, how long since liftoff, how long until retrofire. A mechanical stopwatch that does one job reliably was a sensible backup. A simple mechanical timer also has the advantage of not depending on the spacecraft’s electrical systems.

Heuer was already a well-known maker of precision timers, so a Heuer on a spaceflight was not a stretch. Fellow Mercury astronauts would soon make other brands famous: Wally Schirra’s Omega Speedmaster on Sigma 7 in 1962 is the better-known story, and Scott Carpenter’s Breitling Navitimer Cosmonaut flew on Aurora 7. Glenn’s Heuer deserves a place in that same conversation.

What about Glenn’s 1998 flight on STS-95?

At 77, Glenn flew again aboard Space Shuttle Discovery on STS-95 in October 1998, becoming the oldest person to fly in space at that time. You will sometimes see it said that he wore an Omega Speedmaster X-33 on that mission. The X-33 was introduced in 1998 and was developed with input from NASA, so the claim is plausible. However, the only source we found for it is a collector forum post, and none of the museum or watch-media sources we checked confirmed it.

What is documented is a Smithsonian catalog entry for a small white digital stopwatch-timer, catalogued as STS-95 equipment, which Glenn and other crew members used to time experiments and crew activities. So the careful answer is this: Glenn used a timer on STS-95, and an X-33 on his wrist is unconfirmed. If you see it stated as fact, treat it with caution.

The modern tribute: TAG Heuer Carrera 1887 SpaceX

For the 50th anniversary of Friendship 7, TAG Heuer released the Carrera 1887 SpaceX in 2012. It borrows design cues from the 2915A and shows the Friendship 7 capsule on the dial and caseback, a nod to the original timer. It is no longer in current production, but it turns up on the pre-owned market, with prices commonly quoted around $6,000. It is the closest thing to “Glenn’s watch” you can actually buy.

Affordable alternatives with the same spirit

If you like the idea of a simple, legible chronograph, there are accessible options that capture the mid-century timing-instrument look:

• Seiko or Citizen quartz chronographs: Clean two-register dials for under $300.
• Vintage-inspired mechanical chronographs from Swiss and Japanese makers: Look for panda or reverse-panda layouts.
• Modern Heuer-heritage pieces: The TAG Heuer Carrera family keeps the racing-chronograph look alive.

For a broader look at how astronauts, soldiers and pilots shaped watch design, see our guides to tool watches built for the water and the watch Felix Baumgartner wore from the edge of space. If you enjoy American-history watch stories, our piece on what watch JFK wore covers another figure of the same Mercury-era moment.

Heuer’s racing side lives on in the square Monaco, worn by Steve McQueen in Le Mans and today by Max Verstappen.

FAQ

What watch did John Glenn wear in space?

On Friendship 7 in 1962 he used a Heuer stopwatch, reference 2915A, strapped over his spacesuit sleeve as a backup timer.

Where is John Glenn’s Heuer today?

It is part of the Smithsonian National Air and Space Museum collection and has been displayed at the San Diego Air and Space Museum.

Did John Glenn wear an Omega Speedmaster?

Not on Friendship 7. For STS-95 in 1998, an Omega Speedmaster X-33 is sometimes mentioned, but we could not confirm it from reliable sources. Schirra, not Glenn, is the Mercury astronaut associated with the Speedmaster.

Can you buy a John Glenn tribute watch?

Yes, on the secondhand market. The TAG Heuer Carrera 1887 SpaceX, released in 2012, was made for the 50th anniversary of his flight.

Sources

• Worn & Wound: Watches in Space, John Glenn and the Heuer 2915A
• On The Dash: John Glenn’s Heuer
• TAG Heuer Magazine: Where no Swiss watch has gone before
• Smithsonian NASM: Timer-Stopwatch, STS-95