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Seiko Rotocall SMGG17P1: The digital watch astronauts wore (when Casio was still in another league)
This SMGG17P1 is the reissue of a watch that made history: 37 mm of steel, an octagonal rotating bezel, and a system that doesn't require a 40-page manual to change the time. Just turn the bezel and you're set.
Media outlets like Esquire, Hypebeast, and Wallpaper have told the story: before G-Shocks took over and Casio became synonymous with digital watches, NASA astronauts chose to wear Seiko. The original Rotocall was so practical in space that it was used in over 160 Space Shuttle missions.
Among those who trusted it were three pioneers: Sally Ride, Kathryn Sullivan, and Anna Lee Fisher. They wore it on their wrists while looking down at Earth—not because it was an official NASA-issued watch, but because it was the tool that worked best for them.
The bezel that isn't just for show: it's the remote control
What makes the Rotocall special is how you use it. Instead of pressing impossible button combinations, you simply rotate the bezel.
Eight positions, eight functions: Time, Time Set, Timer, Counter, Stopwatch, Dual Time, Daily Alarm, and Single Alarm. Each side of the octagonal bezel has its function engraved. Align it with 12 o'clock, and the two side buttons let you adjust or use it. Simple, logical, and with that crisp click that confirms you've got it right.
The Display: Two levels, one glance
It features a dual-level screen. On top, the current mode; below, the data (time, minutes, seconds, etc.). The typography is the 1982 original, but the contrast has been improved for better legibility indoors and outdoors, and the backlight has been updated without losing its retro vibe.
The Color: Yellow and Black. The boldest in the collection.
The SMGG17P1 is the yellow and black model of the collection. The same design astronauts wore for 20 years, but in a color that doesn't go unnoticed. Black dial, yellow bezel. For those who want the same history... with a bolder touch.
The Crystal: Hardlex. Built to survive what even space couldn't break
It features Hardlex, Seiko's hardened mineral crystal. It remains flexible and shock-resistant—crucial in zero gravity where a sharp impact could shatter sapphire—but today's version is clearer and more durable than the 80s original.
100 Meters: For the water, for the shower
Water-resistant to 100 meters with a screw-down case back. You can swim, shower, or snorkel. Just avoid using the side buttons underwater.
In short: A 37 mm digital Seiko with a rotating function selector, 100m resistance, real space history, and a design that returned from the 80s to stay. For those who know that before Casio, NASA wore Seiko.
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