Seiko Cal. 6220 - 370

This Spring Drive model from 1970 features a 46mm Hardlex-Coated Steel case. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-47e50f68247c]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1970

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