Seiko Cal. 6661 - 990

The Seiko 6661-990 represents an important milestone in Seiko's 1990 lineup. It features a Cream dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-b2b2b6339bdf]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1990

Related Models

• Seiko 7181-359
• Seiko 6170-321
• Seiko 6161-523
• Seiko 6616-136
• Seiko 5658-606
• Seiko 6680-647
• Seiko 6153-422
• Seiko 3858-732
• Seiko 4563-250
• Seiko 0785-103
• Seiko 6385-473
• Seiko 5663-120