American version(US):4G LTE: B1/B2/B3/B4/B5/B7/B12/B17/B28/B66 3G:B2/B5 American version works in most American countries. (such as USA, Canada, Mexico, Argentina, Bolivia, Colombia, Venezuela, Ecuador, Guatemala, Honduras, Nicaragua, Panama, Peru, Uruguay, Paraguay, Dominica)High speed 4G LTE Chipset, Support both 4G/3G networks; Color LCD display shows network status clearly ; Support 10 WiFi users; big built-in battery ; English and multiple languages system ; Plug&Play,easy to use; Plug to Windows computer USB port to work as USB modem; Power input: 5V1A USB powerThis is a portable 4G LTE SIM card Wi-Fi router provides high speed LTE network. It is convenient & lightweight router, you put it in pocket, and enjoy WiFi Internet anywhere . With a removable big capacity battery, it can provide you WiFi for several days . , support up to 10 Wi-Fi users at the same time. Color LCD display . Big sim card slot ( compatible with Big/Micro/Nano sim cards ) ; Easy to use, easy to carry.Our 4G router / modem only support universal ordinary SIM cards. For some locked SIM cards, contract SIM cards which operators don't allow to use on wifi routers, or only allow to use on their authorized devices. This product might not work. (IF your SIM card can not access to Internet, usually you change another operator's universal SIM card, then it will work.) The router will automatically recognize most SIM cards and APN. if not, user can fill in APN information manually.