Seiko Cal. 6661 - 557

The Seiko 6661-557 represents an important milestone in Seiko's 1965 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-4f0776cc10a8]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1965

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