Seiko Cal. 5644 - 656

The Seiko 5644-656 represents an important milestone in Seiko's 1995 lineup. It features a Silver dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-3ed58fc17ee8]

Also known as: Sumo, Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1995

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