Seiko Cal. 4537 - 437

The 4537-437 is a sought-after Solar piece from Seiko's golden era. Powered by the 4537 caliber with 29j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-f397146a1354]

Also known as: Tuna, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1978

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