Seiko Cal. 3891 - 760

This Automatic model from 1974 features a 39mm Two-Tone case. With its 20mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-4b20eed02829]

Also known as: Helmet, Rally

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1974

Related Models

• Seiko 6137-412
• Seiko 6662-414
• Seiko 3812-191
• Seiko 5255-444
• Seiko 6114-373
• Seiko 6366-477
• Seiko 4489-819
• Seiko 4432-338
• Seiko 5214-777
• Seiko 5265-675
• Seiko 7129-388
• Seiko 4496-401