Seiko Cal. 6647 - 870

The 6647-870 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6647 caliber with 32j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-e37077dfbe0d]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1965

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