Seiko Cal. 6690 - 503

The Seiko 6690-503 represents an important milestone in Seiko's 1991 lineup. It features a Green dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-37053e50ddc6]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1991

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