Seiko Cal. 5653 - 640

The Seiko 5653-640 represents an important milestone in Seiko's 1970 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-f790c189aa88]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1970

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