Seiko Cal. 3815 - 685

The 3815-685 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3815 caliber with 23j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-0a2c998ce781]

Also known as: Helmet, Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1985

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