Seiko Cal. 6634 - 840

The 6634-840 is a sought-after Kinetic piece from Seiko's golden era. It features a Champagne dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-b97937295897]

Also known as: Monster

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Champagne

Jewels

33j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1974

Related Models

• Seiko 4478-398
• Seiko 6350-373
• Seiko 7158-502
• Seiko 5273-139
• Seiko 7141-337
• Seiko 6154-203
• Seiko 6357-980
• Seiko 7116-417
• Seiko 6392-133
• Seiko 6681-328
• Seiko 0765-505
• Seiko 4461-906