Seiko Cal. 6637 - 643

This Solar model from 1980 features a 42mm Two-Tone case. It features a Black dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-69f7be5479e0]

Also known as: Panda, Emperor

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1980

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