Seiko Cal. 5634 - 666

This Automatic model from 1966 features a 40mm Hardlex-Coated Steel case. Powered by the 5634 caliber with 35j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-08a72b195659]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1966

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