Seiko Cal. 6688 - 421

The Seiko 6688-421 represents an important milestone in Seiko's 1981 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-7907ee991746]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1981

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