Seiko Cal. 6155 - 648

This Hand-Winding model from 1965 features a 37mm Titanium case. Powered by the 6155 caliber with 35j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-63de3cbb465d]

Also known as: Monster, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1965

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