Seiko Cal. 6646 - 262

This Spring Drive model from 1975 features a 38mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-a9193294cbd1]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1975

Related Models

• Seiko 6317-296
• Seiko 6255-255
• Seiko 6275-686
• Seiko 6378-151
• Seiko 3863-577
• Seiko 6340-692
• Seiko 5640-990
• Seiko 4541-143
• Seiko 5277-589
• Seiko 4440-227
• Seiko 6156-544
• Seiko 6636-505