Seiko Cal. 6688 - 231

This Spring Drive model from 1983 features a 37mm PVD Black case. Powered by the 6688 caliber with 26j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-0d4662703a53]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1983

Related Models

• Seiko 5277-387
• Seiko 6148-541
• Seiko 7178-228
• Seiko 7144-157
• Seiko 6645-819
• Seiko 0736-871
• Seiko 6389-312
• Seiko 3832-731
• Seiko 5219-946
• Seiko 7021-314
• Seiko 6181-679
• Seiko 3844-806