Seiko Cal. 3870 - 705

The Seiko 3870-705 represents an important milestone in Seiko's 1994 lineup. It features a Navy dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-a9efe7eef091]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1994

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