Seiko Cal. 3870 - 787

Released in 1970, the Cal. 3870 with design code 787 was part of Seiko's domestic market collection. It features a Silver dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-0ab40741a2ef]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1970

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