Seiko Cal. 6133 - 621

The Seiko 6133-621 represents an important milestone in Seiko's 1999 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-7ba9afa1692f]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1999

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