Seiko Cal. 6378 - 538

This Quartz model from 1986 features a 37mm Two-Tone case. Powered by the 6378 caliber with 31j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-d35271a257fc]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

31j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1986

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