Seiko Cal. 5666 - 537

The 5666-537 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5666 caliber with 18j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-11f8c46a10ba]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1996

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