Seiko Cal. 3817 - 302

This Hand-Winding model from 1965 features a 41mm Hardlex-Coated Steel case. Powered by the 3817 caliber with 20j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-7b7c924d5fb3]

Also known as: Bullhead, Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1965

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