Seiko Cal. 3815 - 816

This Hand-Winding model from 1978 features a 41mm PVD Black case. Powered by the 3815 caliber with 27j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-e7cb6a2b5965]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1978

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