Seiko Cal. 6653 - 678

The Seiko 6653-678 represents an important milestone in Seiko's 1971 lineup. It features a Navy dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-99aa30f9d094]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1971

Related Models

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• Seiko 6392-624
• Seiko 3870-806
• Seiko 6111-881
• Seiko 6689-311
• Seiko 4426-847
• Seiko 6190-345
• Seiko 6370-741
• Seiko 6695-240
• Seiko 4495-627
• Seiko 4456-756
• Seiko 5675-678