Seiko Cal. 6637 - 513

The 6637-513 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-5fa1af44ee77]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1999

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