Seiko Cal. 3850 - 540

The Seiko 3850-540 represents an important milestone in Seiko's 1970 lineup. It features a Cream dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-57c0e5e3fad3]

Also known as: Monster, Sportsmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1970

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