Seiko Cal. 5678 - 556

The Seiko 5678-556 represents an important milestone in Seiko's 1966 lineup. Powered by the 5678 caliber with 35j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-ab15449ba353]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1966

Related Models

• Seiko 0722-397
• Seiko 4454-394
• Seiko 6170-709
• Seiko 7129-168
• Seiko 5257-446
• Seiko 4579-869
• Seiko 0753-953
• Seiko 3833-339
• Seiko 5273-931
• Seiko 6625-495
• Seiko 6311-629
• Seiko 5214-789