Seiko Cal. 5660 - 256

The 5660-256 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5660 caliber with 21j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-e67b610d0868]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1970

Related Models

• Seiko 6199-227
• Seiko 6618-197
• Seiko 6353-885
• Seiko 4519-801
• Seiko 6613-770
• Seiko 6189-956
• Seiko 7116-207
• Seiko 7143-538
• Seiko 6633-662
• Seiko 6281-443
• Seiko 4598-220
• Seiko 6271-866