Seiko Cal. 3840 - 121

The Seiko 3840-121 represents an important milestone in Seiko's 1968 lineup. It features a White dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-747e5d081880]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1968

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