Seiko Cal. 4437 - 563

Released in 1966, the Cal. 4437 with design code 563 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-4e4379b3966f]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Champagne

Jewels

30j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1966

Related Models

• Seiko 0793-717
• Seiko 4553-630
• Seiko 4518-252
• Seiko 6277-260
• Seiko 7066-329
• Seiko 6186-757
• Seiko 6122-777
• Seiko 3833-814
• Seiko 4474-685
• Seiko 3888-936
• Seiko 6364-230
• Seiko 6643-140