Seiko Cal. 6664 - 830

The 6664-830 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-18673324861c]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1974

Related Models

• Seiko 4590-692
• Seiko 3851-534
• Seiko 7146-884
• Seiko 5220-354
• Seiko 6610-915
• Seiko 3819-633
• Seiko 0718-739
• Seiko 7181-294
• Seiko 5652-479
• Seiko 6275-832
• Seiko 3815-525
• Seiko 3847-517