Seiko Cal. 6643 - 451

The Seiko 6643-451 represents an important milestone in Seiko's 1965 lineup. Powered by the 6643 caliber with 36j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-e6ac14bff3f1]

Also known as: Pogue

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1965

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