Seiko Cal. 6657 - 121

The Seiko 6657-121 represents an important milestone in Seiko's 1986 lineup. It features a Black dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-b4c9961df72a]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1986

Related Models

• Seiko 3820-419
• Seiko 7020-724
• Seiko 0793-798
• Seiko 6231-777
• Seiko 6271-493
• Seiko 6119-958
• Seiko 4441-829
• Seiko 6398-368
• Seiko 5675-348
• Seiko 6663-432
• Seiko 4428-693
• Seiko 3879-250