Seiko Cal. 4490 - 506

The Seiko 4490-506 represents an important milestone in Seiko's 1989 lineup. Powered by the 4490 caliber with 31j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-c35db9bcc220]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1989

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