Seiko Cal. 6657 - 357

This Solar model from 1973 features a 39mm Two-Tone case. Powered by the 6657 caliber with 18j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-f3f2a36e73ff]

Also known as: Shogun

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1973

Related Models

• Seiko 5640-518
• Seiko 7028-307
• Seiko 7097-826
• Seiko 0743-374
• Seiko 4538-359
• Seiko 7197-637
• Seiko 6161-969
• Seiko 6320-469
• Seiko 4525-789
• Seiko 5678-285
• Seiko 7060-101
• Seiko 7117-464