Seiko Cal. 4415 - 433

This Hand-Winding model from 1975 features a 37mm Stainless Steel case. Powered by the 4415 caliber with 22j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-5bc26395baa9]

Also known as: UFO, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1975

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