Seiko Cal. 6638 - 123

Seiko 6638-123

The 6638-123 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Burgundy dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-06725b8ae3a6]

Also known as: Goldfeather, Crown

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
12.7mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Burgundy
Jewels
30j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1981

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seikata-wm-06725b8ae3a6