Seiko Cal. 6638 - 571

The 6638-571 is a sought-after Solar piece from Seiko's golden era. Powered by the 6638 caliber with 27j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-85cc8b034d24]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

White

Jewels

27j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1980

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