Seiko Cal. 3856 - 904

The Seiko 3856-904 represents an important milestone in Seiko's 1966 lineup. With its 20mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-7a701a08746a]

Also known as: Helmet, Navigator

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

26j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1966

Related Models

• Seiko 7021-573
• Seiko 5256-454
• Seiko 6391-432
• Seiko 3860-283
• Seiko 5650-971
• Seiko 7076-342
• Seiko 4530-806
• Seiko 6377-761
• Seiko 7183-129
• Seiko 4516-858
• Seiko 4558-315
• Seiko 3818-366