Seiko Cal. 6616 - 770

This Spring Drive model from 1968 features a 39mm Stainless Steel case. It features a Green dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-333be78fce36]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1968

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