Seiko Cal. 6388 - 555

The Seiko 6388-555 represents an important milestone in Seiko's 1998 lineup. Powered by the 6388 caliber with 26j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-142bf5b31f48]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

26j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1998

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