Seiko Cal. 6644 - 723

This Automatic model from 1969 features a 38mm Two-Tone case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-89dc7a2f9fb4]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1969

Related Models

• Seiko 6266-500
• Seiko 5678-206
• Seiko 0783-186
• Seiko 5612-656
• Seiko 6386-920
• Seiko 6391-338
• Seiko 6249-302
• Seiko 4493-517
• Seiko 4591-186
• Seiko 5669-533
• Seiko 5270-299
• Seiko 3827-418