Seiko Cal. 0720 - 664

The 0720-664 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0720 caliber with 31j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-256017519322]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1968

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