Seiko Cal. 6331 - 682

This Spring Drive model from 1991 features a 38mm Two-Tone case. With its 21mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-56d26a3cd4ad]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1991

Related Models

• Seiko 4519-984
• Seiko 0746-784
• Seiko 6222-502
• Seiko 3881-852
• Seiko 7180-127
• Seiko 3862-567
• Seiko 6397-473
• Seiko 3843-106
• Seiko 5211-880
• Seiko 4533-280
• Seiko 4578-948
• Seiko 7086-185