Seiko Cal. 6637 - 676

The Seiko 6637-676 represents an important milestone in Seiko's 1986 lineup. Powered by the 6637 caliber with 23j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-5c7dbb46b926]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1986

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