Seiko Cal. 6657 - 223

The Seiko 6657-223 represents an important milestone in Seiko's 1970 lineup. Powered by the 6657 caliber with 36j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-04d555001430]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1970

Related Models

• Seiko 6645-291
• Seiko 6348-812
• Seiko 6113-753
• Seiko 7063-416
• Seiko 7128-904
• Seiko 5631-396
• Seiko 4544-140
• Seiko 5699-821
• Seiko 6281-342
• Seiko 6245-969
• Seiko 0762-510
• Seiko 5669-279