Seiko Cal. 4420 - 744

This Spring Drive model from 1985 features a 37mm Stainless Steel case. Powered by the 4420 caliber with 22j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-01153ede999a]

Also known as: Panda, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1985

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