Seiko Cal. 4487 - 436

The 4487-436 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4487 caliber with 34j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-a5a8cae8667e]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1994

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