Seiko Cal. 6640 - 117

The Seiko 6640-117 represents an important milestone in Seiko's 1983 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-00d4b1157e65]

Also known as: UFO, Crown

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1983

Related Models

• Seiko 5676-921
• Seiko 4473-734
• Seiko 4543-826
• Seiko 5257-135
• Seiko 6256-365
• Seiko 6265-236
• Seiko 6242-590
• Seiko 0730-274
• Seiko 7073-296
• Seiko 7137-962
• Seiko 6630-120
• Seiko 6618-267