Seiko Cal. 5618 - 635

The Seiko 5618-635 represents an important milestone in Seiko's 1973 lineup. Powered by the 5618 caliber with 23j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-b180d03b692a]

Also known as: Turtle, World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1973

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