Seiko Cal. 3891 - 401

The 3891-401 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3891 caliber with 31j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-d009f1bd40bd]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1966

Related Models

• Seiko 4443-559
• Seiko 5240-235
• Seiko 6175-727
• Seiko 5656-764
• Seiko 7165-253
• Seiko 4592-275
• Seiko 4516-588
• Seiko 4453-545
• Seiko 5255-987
• Seiko 4529-621
• Seiko 5288-675
• Seiko 7049-967