Seiko Cal. 6638 - 954

This Solar model from 1973 features a 40mm PVD Black case. Powered by the 6638 caliber with 31j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-746c3e9c030b]

Also known as: Panda

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Burgundy

Jewels

31j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1973

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