Seiko Cal. 6331 - 327

The Seiko 6331-327 represents an important milestone in Seiko's 1981 lineup. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-c60fa391841a]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1981

Related Models

• Seiko 3812-888
• Seiko 6148-563
• Seiko 5637-875
• Seiko 5616-197
• Seiko 7194-954
• Seiko 5694-400
• Seiko 4493-350
• Seiko 7086-851
• Seiko 6138-338
• Seiko 4443-101
• Seiko 6220-222
• Seiko 5231-561