Seiko Cal. 3840 - 542

The 3840-542 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-834783a89a91]

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1968

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