Seiko Cal. 3870 - 621

The 3870-621 is a sought-after Quartz piece from Seiko's golden era. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-08ee72ab0a18]

Also known as: Tuna, Silverwave

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

42mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1967

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