Seiko Cal. 5646 - 990

The Seiko 5646-990 represents an important milestone in Seiko's 1988 lineup. It features a Navy dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-7f7ce56fba9c]

Also known as: Turtle

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1988

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