Seiko Cal. 5644 - 668

The Seiko 5644-668 represents an important milestone in Seiko's 1974 lineup. It features a White dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-ac8caa40f37b]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1974

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