Seiko Cal. 5666 - 423

The 5666-423 is a sought-after Solar piece from Seiko's golden era. It features a Champagne dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-678f144b8dc7]

Also known as: Rally, Bellmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1968

Related Models

• Seiko 6690-298
• Seiko 5260-898
• Seiko 7017-528
• Seiko 5259-815
• Seiko 3885-181
• Seiko 7028-593
• Seiko 6328-160
• Seiko 6335-505
• Seiko 6360-414
• Seiko 5266-334
• Seiko 5279-773
• Seiko 4567-256