Seiko Cal. 4437 - 954

The 4437-954 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-78278be24ef0]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1970

Related Models

• Seiko 3853-519
• Seiko 0754-826
• Seiko 5283-485
• Seiko 4574-843
• Seiko 7178-147
• Seiko 6188-527
• Seiko 5292-966
• Seiko 7016-554
• Seiko 6285-435
• Seiko 6663-332
• Seiko 6639-889
• Seiko 6673-484