Seiko Cal. 5660 - 789

The 5660-789 is a sought-after Solar piece from Seiko's golden era. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-093caa3950fe]

Also known as: Bullhead, Flighty

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1999

Related Models

• Seiko 0784-215
• Seiko 6652-647
• Seiko 4582-550
• Seiko 6344-102
• Seiko 4596-850
• Seiko 4472-657
• Seiko 6357-721
• Seiko 7171-855
• Seiko 6359-982
• Seiko 7170-186
• Seiko 0721-365
• Seiko 4430-803