The Zoom We3G is the ideal way to connect portable Wi-Fi compatible devices to the high-speed cellular data network. The We3G's battery provides up to 4 hours of active Wi-Fi use, so you're not tied to a power outlet. The 4520 is smaller and lighter than most cell phones, so it fits easily in a pocket or purse, the console of your family car, on a table, or anywhere you need a fast Internet connection. Up to 5 Wi-Fi compatible devices can share your high-speed 3G Internet connection using We3G's built-in 3G modem and advanced wireless security. The We3G is a small device with LOTS of performance. Its built-in cellular modem is an unlocked 7.2 Mbps Tri-band modem compatible with AT&T and almost every other GSM service provider in the USA, the UK, the rest of Europe, and everywhere else. Because it's unlocked, changing your service provider is as easy as slipping in a SIM for any compatible GSM Internet service provider, a real money-saver when traveling to other countries. The We3G's built-in Wi-Fi compatible wireless g/b router has WPS for easy setup with the devices you choose to connect. Its rechargeable battery can be re-charged from the AC charger provided, or from any powered USB port. A Micro SD slot accepts up to 32GB so the Model 4520 doubles as portable storage. Enjoy the convenience of fully wireless high-speed Internet access! That means no wires connecting your Wi-Fi compatible devices to the We3G, and no wires connecting the We3G to a power outlet. It's easy with the We3G from Zoom Telephonics, a Boston-based communication products leader since 1977. Zoom's We3G mobile hotspot includes pre-defined 3G service provider settings for service providers in the UK, Jersey, Ireland, Isle of Mann, USA and Europe. This means you can use any data enabled 3G SIM from any network you choose, simply insert the SIM of choice into the Zoom mobile hotspot and enjoy Wi-Fi anywhere - The included software will automatically identify your service provider and con