Seiko Cal. 4426 - 637

The 4426-637 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-d9815ef32a4c]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1986

Related Models

• Seiko 3834-911
• Seiko 7171-626
• Seiko 5651-443
• Seiko 3873-852
• Seiko 6331-823
• Seiko 5684-205
• Seiko 4446-790
• Seiko 3894-639
• Seiko 6237-403
• Seiko 6147-868
• Seiko 0797-507
• Seiko 6678-194