Seiko Cal. 6644 - 550

This Solar model from 1975 features a 45mm Gold-Plated case. Powered by the 6644 caliber with 33j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-07719dd4a29b]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1975

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