Seiko Cal. 6657 - 700

The Seiko 6657-700 represents an important milestone in Seiko's 1985 lineup. Powered by the 6657 caliber with 34j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-c100cfd402f0]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1985

Related Models

• Seiko 0784-447
• Seiko 6642-874
• Seiko 4510-468
• Seiko 6280-856
• Seiko 4410-586
• Seiko 6315-888
• Seiko 5621-435
• Seiko 5639-689
• Seiko 6276-521
• Seiko 4434-203
• Seiko 7149-749
• Seiko 6178-217