The Electron is a tiny development kit for creating cellular-connected electronics projects and products. It comes with a SIM card and an affordable data plan for low-bandwidth things. Plus it's available for more than 100 countries worldwide!
It also comes with Particle's development tools and cloud platform for managing and interacting with your new connected hardware.
Please note that the Electron is a GSM-only device, and does not support CDMA networks. 3G GSM networks require different hardware in different parts of the world. Thus we offer two types of Electron 3Gs—the U260 and U270. Visit this link to see a full list of where each board works (for example, North America uses the U260). Please be sure to order a board that works in the country where you want to deploy your project.