Seiko Cal. 6364 - 646

The 6364-646 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6364 caliber with 27j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-147d3b247edc]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1966

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