Seiko Cal. 6613 - 620

Released in 1977, the Cal. 6613 with design code 620 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-9b1bc41841ab]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1977

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