Seiko Cal. 6613 - 956

Released in 1975, the Cal. 6613 with design code 956 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-1484c31e462d]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

26j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1975

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