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SMGG21
other
Nov 2025 Release
Variations
The Seiko Rotocall, a fan favorite from the 1980s, is reborn
The new model is based on a classic digital watch design from 1982 known as the Rotocall. This iconic creation featured a distinctive octagonal rotary switch that revolutionized the way users changed modes by simply rotating the bezel. The unique design, along with its popularity among astronauts, contributed to this model’s strong international recognition.
Specifications
Movement
- Caliber Number
- A824
- Movement Type
- Quartz
- Precision
- ±20 seconds per month
- Battery life
- Approx. 3 years
- Functions
-
- Rotary switch
- Chronograph up to 100 hours in 1/100 second increments
- Alarm function (single-time alarm)
- Dual-time function
- Battery life warning function
Case/Band
- Case Material
- Stainless steel
- Case Size
-
Thickness:10.6mm
Diameter:37.0mm
Lug-to-lug:43.5mm - Crystal
- Hardlex
- Clasp
- Three-fold clasp with push button release
- Bracelet Length
- 195.0mm
- Distance between lugs
- 20mm
Other Details
- Water Resistance
- 10 bar
- Weight
- 107.0g
- Features
-
- Rotating bezel
- Screw case back