Description
SEIKO Prospex SRPH99 Specifications
| Feature |
| |||
|---|---|---|---|---|
| Driving system | Automatic with manual winding | |||
| Caliber Number | 4R35 | |||
| Case material | Stainless steel with hard coating | |||
| Case back | Solid screw | |||
| Band type | Strap | |||
| Band material | Polyester | |||
| Band color | Black | |||
| Band width | 20 mm | |||
| Clasp | Buckle | |||
| Dial color | Black | |||
| Glass material | Sapphire crystal | |||
| Hands | Luminous black and green (hour, minute) with green, black and white second hand | |||
| Dial markers | Green batons with double trapezoid indexes at 12 o’clock position | |||
| Second markers | Minutes markers around the outer rim | |||
| Lumi Brite | Hands and indexes | |||
| Bezel | Unidirectional rotating black colored stainless steel with silver tone compass scale points | |||
| Crown | Screw down at 4 o’clock position | |||
| Calendar | Date display at between 4 and 5 o’clock position | |||
| Function | Date, hour, minute, second, stop seconds hand | |||
| Accuracy | -35 to +45 seconds per day | |||
| Magnetic resistance | 4,800 A/m | |||
| Vibration | 21,600 vibrations per hour | |||
| Drive duration | Power reserve approximately 41 hours | |||
| Water resistance | 20 bar water resistance (200 meters / 660 feet) | |||
| Size | Length : 45.2 mm x Diameter : 42.4 mm x Thickness : 11.7 mm | |||
| Bracelet length | 205 mm | |||
| Weight | 87 g |
SEIKO Prospex SRPH99 Features
A stealthy new Limited Edition in the Seiko Prospex “Black Series”
On the heels of the best-selling Seiko Prospex “Black Series” inspired by night diving comes an entirely new trio of rugged Prospex references built for nighttime exploration on land. This reference is built around a stainless steel case with a super-hard black coating. It is powered by a Seiko automatic movement, and finished with an engraved case back with the classic Seiko Prospex ‘Great Wave.’ It is characterized by a special blue-green Lumi-Brite hour markers, inspired by the hues rendered in night vision goggles for maximum legibility.
- Date display
- LIMITED EDITION on the case back
- Serial number engraved on the case back
- 23 jewels
- Screw case back
- Screw-down crown
- Rotating bezel
- Stop seconds hand function
History of Seiko
The company was founded in 1881, when Kintarō Hattori opened a watch and jewerly 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, meaning roughly “House of Exquisite Workmanship”.
The first watches produced under the Seiko brand appeared in 1924. In 1969, Seiko introduced the Astron, the world’s first production quartz watch, it cost the same as a medium-sized car. Seiko later went on to introduce the first quartz chronograph.
