Seiko Cal. 3836 - 635

The 3836-635 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3836 caliber with 24j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-10520473c8b5]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1993

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