Seiko Cal. 6646 - 972

The 6646-972 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6646 caliber with 33j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-50466db36264]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1970

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