Seiko Cal. 6644 - 940

This Automatic model from 1997 features a 36mm Titanium case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-74a5347d5b1f]

Also known as: Turtle, Rally

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1997

Related Models

• Seiko 3833-422
• Seiko 3814-403
• Seiko 5669-650
• Seiko 6276-711
• Seiko 6288-634
• Seiko 6657-869
• Seiko 7159-655
• Seiko 7045-899
• Seiko 6363-906
• Seiko 6391-690
• Seiko 6250-586
• Seiko 5643-191