Seiko Cal. 6681 - 657

The Seiko 6681-657 represents an important milestone in Seiko's 1994 lineup. It features a Green dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-031e902366df]

Also known as: UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1994

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