Seiko Cal. 6377 - 903

The Seiko 6377-903 represents an important milestone in Seiko's 1993 lineup. It features a White dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-1985816fdfc3]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1993

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