Seiko Cal. 6638 - 997

Seiko 6638-997

This Solar model from 1997 features a 36mm PVD Black case. With its 18mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-bcea5f94e67d]

Also known as: World Timer, Baby Tuna

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
36mm
Case Thickness
13.3mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
50m
Dial Color
Navy
Jewels
32j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1997

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