Seiko Cal. 5635 - 651

This Quartz model from 1980 features a 40mm Titanium case. Powered by the 5635 caliber with 35j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-310e7b3162c9]

Also known as: Sumo, Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1980

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