Seiko Cal. 6637 - 291

This Spring Drive model from 1986 features a 36mm PVD Black case. It features a Green dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-4af4c5c66f3c]

Also known as: Sea Horse, Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1986

Related Models

• Seiko 6250-907
• Seiko 7129-745
• Seiko 5656-517
• Seiko 6129-300
• Seiko 6174-103
• Seiko 4524-965
• Seiko 7144-902
• Seiko 5648-201
• Seiko 4464-803
• Seiko 0797-949
• Seiko 7149-534
• Seiko 3886-448