Seiko Cal. 6181 - 706

Released in 1978, the Cal. 6181 with design code 706 was part of Seiko's domestic market collection. It features a Black dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-2ef8cd29c792]

Also known as: Tuna, World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1978

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