Seiko Cal. 6661 - 828

Released in 1967, the Cal. 6661 with design code 828 was part of Seiko's domestic market collection. Powered by the 6661 caliber with 21j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-3891d519c391]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1967

Related Models

• Seiko 4523-180
• Seiko 4477-111
• Seiko 7041-208
• Seiko 3874-783
• Seiko 4469-994
• Seiko 6345-750
• Seiko 3876-581
• Seiko 7099-758
• Seiko 4419-580
• Seiko 6140-850
• Seiko 4599-660
• Seiko 4564-873