Seiko Cal. 5644 - 154

The Seiko 5644-154 represents an important milestone in Seiko's 1990 lineup. With its 19mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-f28195f3f31b]

Also known as: UFO, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1990

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