Seiko Cal. 6613 - 557

The Seiko 6613-557 represents an important milestone in Seiko's 1976 lineup. Powered by the 6613 caliber with 32j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-8c7d8a68034d]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1976

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