Seiko Cal. 5646 - 647

The Seiko 5646-647 represents an important milestone in Seiko's 1967 lineup. Powered by the 5646 caliber with 32j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-ccfca41bed74]

Also known as: Silverwave, World Timer

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1967

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