434 Tattoo is a tattoo studio based in Honolulu. It takes on a wide range of tattoo styles and techniques, such as traditional Japanese Tebori, traditional American, colorwork, and tribal. It also offers hand-poked piercings, as well as temporary henna tattoos. It has been in business since 2003. 434 Tattoo’s owner and senior artist, Adam Siehr, is a member of the Alliance of Professional Tattoo artists and was once featured in the Oahu Gold Magazine.