Seiko Cal. 3878 - 687

The Seiko 3878-687 represents an important milestone in Seiko's 1965 lineup. It features a Silver dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-d08cab5d9515]

Also known as: Helmet, Flighty

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1965

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