Seiko Cal. 5666 - 504

The 5666-504 is a sought-after Hand-Winding piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-3a59159097eb]

Also known as: Helmet, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1973

Related Models

• Seiko 4445-515
• Seiko 6258-974
• Seiko 6689-697
• Seiko 7054-575
• Seiko 0754-900
• Seiko 6679-387
• Seiko 6634-218
• Seiko 6627-268
• Seiko 4512-682
• Seiko 6686-723
• Seiko 7099-464
• Seiko 4435-523