Seiko Cal. 4527 - 520

The 4527-520 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4527 caliber with 32j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-36519fddd3bb]

Also known as: Monster, Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1973

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