Seiko Cal. 5661 - 126

This Automatic model from 1971 features a 41mm Hardlex-Coated Steel case. Powered by the 5661 caliber with 36j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-ceae359318a1]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1971

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