Seiko Cal. 5615 - 645

Released in 1986, the Cal. 5615 with design code 645 was part of Seiko's domestic market collection. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-0ce81df8c6b7]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Champagne

Jewels

33j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1986

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