Seiko Cal. 4548 - 643

The 4548-643 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-de6f6f1ab5b4]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1972

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