Seiko Cal. 4444 - 637

The 4444-637 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-37d76efde732]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1976

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