Seiko Cal. 6378 - 286

The 6378-286 is a sought-after Solar piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-70f933633a73]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1975

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