Seiko Cal. 5646 - 138

Released in 1966, the Cal. 5646 with design code 138 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-e3fff02fc33b]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1966

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