Seiko Cal. 3891 - 106

This Spring Drive model from 1981 features a 37mm Titanium case. Powered by the 3891 caliber with 27j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-3a56ee875030]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1981

Related Models

• Seiko 5675-150
• Seiko 0730-788
• Seiko 6649-105
• Seiko 6324-320
• Seiko 3899-523
• Seiko 6129-790
• Seiko 6634-532
• Seiko 6383-346
• Seiko 4586-646
• Seiko 6655-392
• Seiko 5239-577
• Seiko 0767-600