Seiko Cal. 6156 - 304

The Seiko 6156-304 represents an important milestone in Seiko's 1986 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-af472a05ecf5]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1986

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