Seiko Cal. 5681 - 669

Released in 1968, the Cal. 5681 with design code 669 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-3db85abc3622]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1968

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