Seiko Cal. 6660 - 691

This Solar model from 1987 features a 34mm PVD Black case. Powered by the 6660 caliber with 22j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-4a07dbeb9bf8]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1987

Related Models

• Seiko 6686-277
• Seiko 6396-966
• Seiko 6282-714
• Seiko 7199-227
• Seiko 4564-999
• Seiko 0779-845
• Seiko 5260-686
• Seiko 6185-189
• Seiko 6289-767
• Seiko 6293-812
• Seiko 7178-877
• Seiko 6328-734