Seiko Cal. 3811 - 825

The Seiko 3811-825 represents an important milestone in Seiko's 1970 lineup. With its 22mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-5efd4e8dd3f2]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1970

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