Seiko Cal. 5638 - 276

The 5638-276 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-f234d77a6572]

Also known as: Tuna, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

22j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1994

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