Seiko Cal. 6331 - 357

The 6331-357 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-5edf8ae037e8]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1970

Related Models

• Seiko 6618-372
• Seiko 6685-317
• Seiko 0765-648
• Seiko 5612-746
• Seiko 4492-535
• Seiko 6254-476
• Seiko 4411-921
• Seiko 6121-452
• Seiko 7042-295
• Seiko 6166-664
• Seiko 5244-424
• Seiko 7055-196