Seiko Cal. 7131 - 637

The Seiko 7131-637 represents an important milestone in Seiko's 1981 lineup. It features a Cream dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-aca658c56606]

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1981

Related Models

• Seiko 7040-718
• Seiko 4573-371
• Seiko 7195-538
• Seiko 5281-482
• Seiko 0734-836
• Seiko 0793-704
• Seiko 4595-136
• Seiko 5238-911
• Seiko 3833-542
• Seiko 6279-606
• Seiko 5658-738
• Seiko 4554-723