Description
SEIKO QUARTZ Chronograph SMGG21 Specifications
| Feature |
| ||
|---|---|---|---|
| Driving system | Digital quartz | ||
| Caliber Number | A824 | ||
| Case material | Stainless steel | ||
| Case back | Solid screw | ||
| Band type | Bracelet | ||
| Band material | Stainless steel | ||
| Band color | Silver tone | ||
| Band width | 20 mm | ||
| Clasp | Three-fold clasp with push button release | ||
| Dial color | Grey LCD | ||
| Glass material | Hardlex | ||
| LumiBrite | Electroluminescent | ||
| Bezel | Octagonal rotating blue and silver tone stainless steel | ||
| Crown | Screw down | ||
| Calendar | Date and day display automatically adjusts for short months and leap years until the year 2074 | ||
| Function | Chronograph, calendar, hour, minute, second, AM/PM, countdown timer, single and settable alarm, dual time, battery life warning | ||
| Accuracy | ± 20 seconds per month | ||
| Drive duration | Approximately 3 years | ||
| Water resistance | 10 bar water resistance (100 meters / 330 feet) | ||
| Size | Diameter 37 mm x Thickness 10.6 mm | ||
| Lug to lug | 43.5 mm | ||
| Bracelet length | 195 mm | ||
| Weight | 107 g |
SEIKO QUARTZ Chronograph SMGG21 Features
A new creation pays homage to the fan-favorite 1980s watch once known as the Seiko Rotocall
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.
This design is based on an archive 1980s Seiko digital quartz watch affectionately known by fans as the ‘Rotocall,’ worn by astronauts on space expeditions.
This men’s digital quartz watch in stainless steel combines functionality with everyday durability. Protected by a Hardlex glass and water resistant to 10 bar – 100m, it offers a full range of features including hour, minute, second, calendar, chronograph, countdown timer, single alarm and settable alarm. Designed with a strong yellow bezel and stainless steel bracelet, it balances sporty style with practical performance.
- Rotary switch
- Calendar automatically adjusts until the year 2074
- Chronograph up to 100 hours in 1/100 second increments
- Alarm function (single-time alarm)
- Dual-time function
- Battery life warning function
SEIKO QUARTZ Chronograph SMGG21 History
The company was founded in 1881, when Kintarō Hattori opened a watch and jewelry shop called “K. Hattori” (服部時計店 Hattori Tokeiten) in the Ginza area of Tokyo, Japan. Eleven years later, in 1892, he began to produce clocks under the name Seikosha (精工舎 Seikōsha), meaning roughly “House of Exquisite Workmanship”. According to Seiko’s official company history, titled “A Journey In Time: The Remarkable Story of Seiko” (2003), Seiko is a Japanese word meaning “exquisite” or “success” (“exquisite” is usually written 精巧 from Chinese jīngqiǎo, while the meaning “success” is usually written 成功 from Chinese chénggōng).
The first watches produced under the Seiko brand appeared in 1924. In 1969, Seiko introduced the Astron, the world’s first production quartz watch; when it was introduced, it cost the same as a medium-sized car. Seiko later went on to introduce the first quartz chronograph.
In the late 1980s, Seiko produced the first automatic quartz that combined the self-energizing attributes of an automatic watch with quartz accuracy. The watch is entirely powered by its movement in everyday wear. In 1991, to increase popularity, these watches were relaunched under the name Seiko Kinetic.
source : https://en.wikipedia.org/wiki/Seiko
