Seiko Cal. 5641 - 677

The Seiko 5641-677 represents an important milestone in Seiko's 1991 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-3cc785ba4354]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1991

Related Models

• Seiko 4549-900
• Seiko 4513-432
• Seiko 6640-731
• Seiko 6355-271
• Seiko 4511-275
• Seiko 7045-143
• Seiko 7049-592
• Seiko 6369-611
• Seiko 6194-330
• Seiko 6193-906
• Seiko 5270-701
• Seiko 6320-175