Seiko Cal. 0764 - 521

Released in 1967, the Cal. 0764 with design code 521 was part of Seiko's domestic market collection. Powered by the 0764 caliber with 28j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-31ca5febefc5]

Also known as: Bullhead, Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1967

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