Seiko Cal. 5631 - 410

The Seiko 5631-410 represents an important milestone in Seiko's 1988 lineup. It features a Cream dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-f1944872250e]

Also known as: Crown, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1988

Related Models

• Seiko 5213-831
• Seiko 6129-275
• Seiko 6288-926
• Seiko 0761-238
• Seiko 4483-653
• Seiko 6137-500
• Seiko 0779-212
• Seiko 6343-810
• Seiko 6217-981
• Seiko 7183-196
• Seiko 3823-383
• Seiko 4415-254