Seiko Cal. 4489 - 648

This Hand-Winding model from 1977 features a 45mm PVD Black case. Powered by the 4489 caliber with 35j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-ad55c274c03c]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1977

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