Seiko Cal. 6278 - 733

This Hand-Winding model from 1970 features a 39mm Titanium case. Powered by the 6278 caliber with 20j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-cf70cabfb92f]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1970

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