Seiko Cal. 6163 - 691

The 6163-691 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-c20b28ba2e55]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1982

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