Seiko Cal. 6637 - 947

The Seiko 6637-947 represents an important milestone in Seiko's 1995 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-acf79fd3fa2f]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1995

Related Models

• Seiko 5684-831
• Seiko 5682-455
• Seiko 7083-930
• Seiko 5219-152
• Seiko 6254-436
• Seiko 6645-270
• Seiko 7076-961
• Seiko 0751-125
• Seiko 7149-899
• Seiko 6275-701
• Seiko 5685-353
• Seiko 0722-154