Seiko Cal. 6291 - 640

The Seiko 6291-640 represents an important milestone in Seiko's 1969 lineup. With its 18mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-a7b7187bbe6a]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1969

Related Models

• Seiko 6345-888
• Seiko 7139-669
• Seiko 4520-873
• Seiko 4598-444
• Seiko 6156-691
• Seiko 7189-355
• Seiko 4518-858
• Seiko 6183-327
• Seiko 7027-749
• Seiko 7170-463
• Seiko 7154-374
• Seiko 4441-228