Seiko Cal. 6634 - 187

The Seiko 6634-187 represents an important milestone in Seiko's 1991 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-b4d4a5b0d295]

Also known as: Monster, Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

24j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1991

Related Models

• Seiko 7087-183
• Seiko 5226-531
• Seiko 6299-111
• Seiko 7134-102
• Seiko 7045-278
• Seiko 6330-623
• Seiko 4554-895
• Seiko 5685-430
• Seiko 6330-414
• Seiko 6121-794
• Seiko 3853-751
• Seiko 6278-859