Seiko Cal. 5656 - 666

This Solar model from 1986 features a 34mm Hardlex-Coated Steel case. Powered by the 5656 caliber with 20j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-630c2aca2211]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1986

Related Models

• Seiko 7182-872
• Seiko 4542-804
• Seiko 6285-107
• Seiko 4479-379
• Seiko 6119-713
• Seiko 0737-878
• Seiko 6695-724
• Seiko 4560-428
• Seiko 6685-859
• Seiko 0777-904
• Seiko 6137-243
• Seiko 6369-251