Seiko Cal. 4487 - 525

The 4487-525 is a sought-after Solar piece from Seiko's golden era. Powered by the 4487 caliber with 19j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-5537a628c12a]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1994

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