Seiko Cal. 6155 - 733

This Hand-Winding model from 1971 features a 37mm PVD Black case. Powered by the 6155 caliber with 23j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-4c9ba5036d2f]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1971

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