Seiko Cal. 5271 - 633

This Spring Drive model from 1969 features a 38mm PVD Black case. Powered by the 5271 caliber with 23j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-c96931b77bd8]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1969

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