Seiko Cal. 3870 - 550

Released in 1985, the Cal. 3870 with design code 550 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-189bdfef4998]

Also known as: Pogue, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1985

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