Seiko Cal. 4427 - 525

This Spring Drive model from 1978 features a 45mm Titanium case. Powered by the 4427 caliber with 24j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-a7679f59abcf]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1978

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