Seiko Cal. 5639 - 557

The 5639-557 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5639 caliber with 36j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-590fd762a049]

Also known as: UFO, Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1972

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