Seiko Cal. 6678 - 436

Released in 1993, the Cal. 6678 with design code 436 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-53291bc552bd]

Also known as: Sumo, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1993

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