Seiko Cal. 6637 - 336

Seiko 6637-336

The 6637-336 is a sought-after Quartz piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-f461fdf0e3a2]

Also known as: Shogun, Baby Tuna

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
10.4mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Cream
Jewels
28j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1978

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