Seiko Cal. 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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