Seiko Cal. 6617 - 237

The Seiko 6617-237 represents an important milestone in Seiko's 1977 lineup. Powered by the 6617 caliber with 20j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-38eae6112bc0]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1977

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