Seiko Cal. 4537 - 781

The 4537-781 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4537 caliber with 26j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-93f3ae36b43e]

Also known as: Turtle, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

26j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1980

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