Seiko Cal. 6617 - 635

This Hand-Winding model from 1980 features a 35mm PVD Black case. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-0cd267387bc4]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1980

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