Seiko Cal. 3815 - 431

Released in 1967, the Cal. 3815 with design code 431 was part of Seiko's domestic market collection. With its 22mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-be9fd1421920]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1967

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