Seiko Cal. 3878 - 320

Released in 1986, the Cal. 3878 with design code 320 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-69eaff593be2]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1986

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