Seiko Cal. 6617 - 310

This Hand-Winding model from 1972 features a 45mm PVD Black case. Powered by the 6617 caliber with 25j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-6ce99c7599f7]

Also known as: UFO, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1972

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