Seiko Cal. 6388 - 221

The Seiko 6388-221 represents an important milestone in Seiko's 1968 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-3c7030f4c68b]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1968

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