Seiko Cal. 6336 - 740

The 6336-740 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6336 caliber with 25j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-7f8e825e3e6d]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1977

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