Seiko Cal. 4435 - 637

The 4435-637 is a sought-after Kinetic piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-2e5707d4ec8d]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1999

Related Models

• Seiko 5225-788
• Seiko 5644-902
• Seiko 6333-577
• Seiko 6644-632
• Seiko 3894-389
• Seiko 7123-835
• Seiko 7155-605
• Seiko 6385-709
• Seiko 3822-114
• Seiko 4589-851
• Seiko 3885-421
• Seiko 7054-258