Seiko Cal. 6639 - 570

The 6639-570 is a sought-after Solar piece from Seiko's golden era. Powered by the 6639 caliber with 25j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-23b736dba2c4]

Also known as: Crown, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1996

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