SEIKO SMGG21P1 DIGITAL ALARM CHRONOGRAPH QUARTZ MEN WATCH
SMGG21P1
- In stock, ready to ship
- Backordered, shipping soon
- 25% off in cart
- Warranty 3 Years
In 1982 Seiko built a digital watch that changed modes by turning its bezel. It was called the Rotocall, the mechanism was a rotary switch, and Seiko notes that it found a following among astronauts. The Seiko SMGG21P1 carries that idea forward — the bezel is still the control, and turning it still moves you through the functions.
It comes in a stainless steel case and bracelet with a blue and grey bezel, 37.0mm across, with a 100-hour chronograph timing to 1/100th of a second, an alarm, a timer, a second time zone and a calendar programmed to 2074.
At a Glance
- CollectionConceptual
- Chronograph100 Hours, 1/100 Second
- MovementCalibre A824 Quartz
- DisplayDigital
- Case Size37.0mm
- Case Thickness10.6mm
- BezelBlue and Grey, Rotating
- Water Resistance100m (10 BAR)
- BraceletStainless Steel, 20mm
Why You'll Love It
- The bezel is the interface. Rather than pressing a button repeatedly to cycle through modes, you turn the bezel — the idea Seiko introduced on the 1982 Rotocall and has revived here.
- A chronograph that runs to 100 hours and resolves to 1/100th of a second.
- A blue and grey rotating bezel on a compact 37.0mm stainless steel case and bracelet.
Perfect For
- Everyday Wear
- Digital Watch Collectors
- Seiko Collectors
- Retro & Reissue Designs
- Travel & Dual Time
- Gift
Technical Specifications
| Model Number | SMGG21P1 |
| Case Material | Stainless Steel |
| Case Colour | Silver |
| Case Diameter | 37.0mm |
| Case Thickness | 10.6mm |
| Lug-to-Lug | 43.5mm |
| Bezel | Blue and Grey, Rotating |
| Glass | Hardlex Crystal |
| Caseback | Screw Case Back |
| Water Resistance | 100 Metres (10 BAR) |
| Display | Digital |
| Mode Selection | Rotary Switch (Turn Bezel) |
| Chronograph | Up to 100 Hours, 1/100 Second Increments |
| Timer | Up to 100 Minutes, 1-Minute Increments |
| Alarm | Single-Time Alarm |
| Calendar | Full Auto Calendar to 31 December 2074 |
| Second Time Zone | Dual-Time Function |
| Illumination | Internal LED |
| Other | Counter Function, Battery Life Warning |
| Material | Stainless Steel |
| Colour | Silver |
| Lug Width | 20mm |
| Clasp | Three-Fold with Push Button Release |
| Calibre | Seiko A824 |
| Type | Quartz |
| Accuracy | ±20 seconds per month |
| Battery Life | Approx. 3 Years |
Best Matched With
- Navy Crewneck
- Camel Overcoat
- Dark Denim
- White Oxford Shirt
- Beige Chinos
- White Trainers
- Leather Jacket
Frequently Asked Questions
What is the Rotocall?
A Seiko digital watch from 1982 whose defining feature was the rotary switch — a mechanism that let the wearer change modes by turning the bezel rather than pressing through them. Seiko notes that the original found a following among astronauts. This reference is based on that design.
Can I swim and shower with it?
Yes. Seiko's guide for 10 bar watches allows accidental splashes, rain, swimming, yachting, showers, bathing and shallow diving. It does not allow scuba or saturation diving, and Seiko gives this watch no diver's designation. Rinse it in fresh water after the sea or a pool. Water resistance is not permanent, so have it checked regularly.
What warranty does this watch come with?
The SMGG21P1 comes with a 3-year warranty when purchased from City Chain Singapore, an authorised Seiko retailer. Keep your warranty card and proof of purchase — both are required when submitting the watch for service.
Why Buy from City Chain Singapore
- Authorised Retailer 100% genuine Seiko product
- 3-Year Warranty Covered on every purchase
- Bracelet Adjustment Complimentary sizing in store
- Free Shipping All orders within Singapore
Extra $6 OFF with min. $100 spend
Use Code: OCT6
Extra $12 OFF with min. $180 spend
Use Code: OCT12
Extra $25 OFF with min. $350 spend
Use Code: OCT25
Calibre:A824
Display: Digital
Calibre Type: Quartz - Powered By A Battery
Calibre Function: Alarm Chronograph
Accuracy: +/-20 seconds a month (at normal temperature range (10 C and 60 C)
Dial Colour: LCD
Case Material: Stainless steel
Strap/Bracelet: Stainless steel bracelet
Glass Material: Hardlex Crystal
Crown: Buttons
Rotating Bezel: Two-Way
Case Diameter: 37mm
Lug Width: 20mm
Hand Indicators: Hour, Minute, Seconds, AM/PM
Calendar Indicators: Date, Day Of The Week
Lumibrite: Electroluminescent Dial
Alarm function: Single-time alarm, Daily alarm
Dual Time Capability: Second Time Zone can be set
Perpetual Calendar: Calendar Automatically Adjusts For Short Months and Leap Years Until the year 2074
Stopwatch: Stopwatch Measurement up to 99 hours, 59 minutes, and 59 seconds in 1/100-second increments (1-second increments after 60 minutes), split time, total time, STOP/LAP mark
Timer Mode: Measurement increments: May be set up to 100 minutes in 1-minute increments
Counter Mode: During single counter: Up to 9999; during twin counter: Up to 99 x 2 counters
Water Resistance: 10 BAR
Delivery within Singapore | Order by 11AM
(Checkout options may vary depending on minimum order requirements)
• Free Standard Delivery (3 business days)
• Free Next Day Delivery
• Express Delivery at $30 (order by 2PM)
• Click & Collect (ready in 2–3 business days)
Weekend & Public Holiday Orders
Orders placed during this time will be processed on the next business day.
For online purchase, you can have bracelet or leather strap adjustments done at any City Chain store. Please bring along your warranty book for the service.
