Seiko Cal. 3816 - 931

This Hand-Winding model from 1965 features a 37mm Gold-Plated case. Powered by the 3816 caliber with 26j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-ae62b77fca2e]

Also known as: Turtle, Samurai

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1965

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