Description
SEIKO QUARTZ Classic SUR309 Specifications
| Feature |
| ||
|---|---|---|---|
| Driving system | Quartz | ||
| Caliber Number | 6N52 | ||
| Case material | Stainless steel | ||
| Case back | Solid | ||
| Band type | Bracelet | ||
| Band material | Stainless steel | ||
| Band color | Silver tone | ||
| Band width | 20 mm | ||
| Clasp | Three fold with push button release | ||
| Dial color | Blue with sunray finish | ||
| Glass material | Sapphire crystal | ||
| Hands | Silver tone (hour, minute, second) | ||
| Second markers | Minutes markers around the outer rim | ||
| Dial markers | Silver tone batons indexes | ||
| Lumi Brite | Hands and indexes markers | ||
| Bezel | Fixed silver tone | ||
| Crown | Pull / push | ||
| Calendar | Date display at the 3 o’clock position | ||
| Function | Date, hour, minute, second | ||
| Accuracy | ±15 seconds per month | ||
| Drive duration | Battery life approximately 3 years | ||
| Water resistance | 10 bar water resistance (100 meters / 330 feet) | ||
| Size | Diameter 40.2 mm x Thickness 8.4 mm | ||
| Lug to lug | 47 mm | ||
| Weight | 113 g |
SEIKO QUARTZ Classic SUR309 Features
- Calendar date display
- Silver stainless steel case
- Silver stainless steel bracelet
- Silver stainless steel bezel
- Solid screw case back
SEIKO QUARTZ Classic SUR309 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
