Seiko Cal. 4427 - 252

The Seiko 4427-252 represents an important milestone in Seiko's 1968 lineup. Powered by the 4427 caliber with 34j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-3cd81666441a]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Cream

Jewels

34j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1968

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