Seiko Cal. 6643 - 403

This Solar model from 1967 features a 39mm Two-Tone case. Powered by the 6643 caliber with 30j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-599e7460d682]

Also known as: Monster

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1967

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