Seiko Cal. 4490 - 787

The 4490-787 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4490 caliber with 35j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-cc98bb39db63]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1983

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