Seiko Cal. 6638 - 204

The 6638-204 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6638 caliber with 19j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-7105f7ec96b4]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

19j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1975

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