Seiko Cal. 6649 - 918

This Spring Drive model from 1971 features a 46mm PVD Black case. It features a Green dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-7e948de5cb83]

Also known as: Silverwave, World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1971

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