Seiko Cal. 5641 - 912

This Spring Drive model from 1965 features a 39mm Hardlex-Coated Steel case. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-535430dfe70e]

Also known as: Panda, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1965

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