Seiko Cal. 4478 - 236

The Seiko 4478-236 represents an important milestone in Seiko's 1965 lineup. Powered by the 4478 caliber with 34j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-f6243b8f72ee]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

34j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1965

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