Seiko Cal. 6378 - 237

The 6378-237 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-f96ee80ccafb]

Also known as: Bullhead, Crown

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1994

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