About the watch
The Seiko SMGG21 'Rotocall' is a modern reissue of Seiko’s 1982 digital watch, known for its distinctive octagonal rotary bezel interface and use by NASA astronauts. This 37mm stainless steel digital quartz watch features a light gray dial, a unique mode-selecting rotating bezel, and 100m water resistance. It pays homage to its space-faring heritage with an updated A824 digital module.
- Movement
- quartz
- Caliber
- Seiko A824
- Case size
- 37mm
- Case thickness
- 10.6mm
- Case material
- Stainless steel
- Case shape
- octagonal
- Complications
- chronograph, alarm, dual time, rotary switch, battery life warning, timer, counter, 24-hour indicator
- Crystal
- Hardlex
- Dial colour
- light gray
- Lug width
- 20mm
- Water resistance
- 100m / 10 bar
- Release year
- 2025
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