These Power Rainbow LED lights are perfect for anyone looking to customize their Game Boy handheld. The 5mm lights are mainly used to replace the power indicator LED and offer a slow fade between colors. The positive leg is 30mm long and the negative leg is 27mm (+0.5mm). They operate at a voltage of 3.0 - 3.4V and a current of 20MA. Some basic tools and soldering skills are needed to install. If you're not sure, it's best to get professional help.