Seiko Cal. 6660 - 412

Released in 1986, the Cal. 6660 with design code 412 was part of Seiko's domestic market collection. It features a Navy dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-30ced1c2455b]

Also known as: Helmet, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1986

Related Models

• Seiko 5233-439
• Seiko 7131-454
• Seiko 7081-975
• Seiko 5650-286
• Seiko 6115-342
• Seiko 7041-230
• Seiko 7016-352
• Seiko 4515-935
• Seiko 5616-540
• Seiko 5623-927
• Seiko 6679-797
• Seiko 6638-704