The Omega X-33 was developed as a joint project between NASA and Omega to create a more sophisticated watch for the space shuttle and later space programs.
The G-Shock DW-5600 is another of the few watches that NASA has qualified for spaceflight.
The example shown here is just one of five officially certified G-Shock watches. These are the DW-5600 C and E variants, the DW-5900, the DW-6900, and the G-Shock Master G-9000.
Another of the few NASA-approved watches is the Timex Ironman, the watch displayed here. Popular with Shuttle astronauts, it’s been likened to the Swiss Army knife of wristwatches.