Seiko Cal. 6648 - 603

The Seiko 6648-603 represents an important milestone in Seiko's 1967 lineup. It features a Green dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-3608bead64f2]

Also known as: Monster, Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1967

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