Seiko Cal. 4438 - 226

The Seiko 4438-226 represents an important milestone in Seiko's 1967 lineup. Powered by the 4438 caliber with 21j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-ec91ecc8dd2b]

Also known as: Bellmatic, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1967

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