Seiko Cal. 5256 - 678

Released in 1978, the Cal. 5256 with design code 678 was part of Seiko's domestic market collection. It features a Black dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-7f0d14342f5d]

Also known as: Sea Horse, Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1978

Related Models

• Seiko 6170-975
• Seiko 6677-581
• Seiko 6222-901
• Seiko 6325-247
• Seiko 5228-410
• Seiko 4467-999
• Seiko 6121-771
• Seiko 0712-310
• Seiko 6355-162
• Seiko 3820-610
• Seiko 6294-120
• Seiko 7020-351