Seiko Cal. 4525 - 764

The 4525-764 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4525 caliber with 26j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-d823f1cee00b]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1969

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