Seiko Cal. 6647 - 436

The 6647-436 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6647 caliber with 20j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-c6aebbebe5db]

Also known as: Silverwave

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1973

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