Seiko Cal. 4525 - 740

The 4525-740 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4525 caliber with 28j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-082b4eb549ed]

Also known as: Goldfeather, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1974

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