Seiko Cal. 6631 - 107

The Seiko 6631-107 represents an important milestone in Seiko's 1987 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-41eddf9b03db]

Also known as: Arnie

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1987

Related Models

• Seiko 5667-777
• Seiko 4510-375
• Seiko 4519-816
• Seiko 6356-516
• Seiko 7032-467
• Seiko 3826-665
• Seiko 6228-379
• Seiko 6341-316
• Seiko 5667-629
• Seiko 7161-150
• Seiko 5268-867
• Seiko 7160-765