Seiko Cal. 6670 - 740

This Hand-Winding model from 1966 features a 41mm Two-Tone case. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-c1500cfb6d2b]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1966

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