Seiko Cal. 6155 - 790

The 6155-790 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6155 caliber with 24j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-490c67c9ffeb]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1982

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