Seiko Cal. 6661 - 643

Released in 1995, the Cal. 6661 with design code 643 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-4526cab1caba]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1995

Related Models

• Seiko 5695-445
• Seiko 6675-588
• Seiko 6235-675
• Seiko 5234-567
• Seiko 4546-564
• Seiko 4477-113
• Seiko 7010-135
• Seiko 6277-289
• Seiko 6636-684
• Seiko 6158-631
• Seiko 4578-723
• Seiko 3896-182