Seiko Cal. 6657 - 492

The Seiko 6657-492 represents an important milestone in Seiko's 1971 lineup. Powered by the 6657 caliber with 18j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-5e8fcf60a75d]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1971

Related Models

• Seiko 6197-962
• Seiko 4599-725
• Seiko 4515-436
• Seiko 3893-282
• Seiko 7042-718
• Seiko 4412-991
• Seiko 6680-350
• Seiko 6119-972
• Seiko 4577-650
• Seiko 5247-749
• Seiko 6273-994
• Seiko 6627-678