Seiko Cal. 4550 - 537

The Seiko 4550-537 represents an important milestone in Seiko's 1973 lineup. Powered by the 4550 caliber with 32j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-81720f9ee102]

Also known as: Turtle, Golden Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1973

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