Smart 3G Mini Wireless Wifi Router Support 3G And Wifi,Work By SIM Card ,Router M2 Main Features:---Connect up to 5 WiFi enabled devices at the same time---Work with external power adapter, unlimited working time---Friendly user interfaceProduct Specification:---WLAN: IEEE 802.11b/g/n---HSUPA/UMTS---EDGE/GPRS/GSM---HSDPA data service of up to 7.35 Mbps*---HSUPA data service of up to 5.76 Mbps*---Equalizer and receive diversity---Data and SMS Service---Depending on the state of network and environmentHow it works?Mode 1:Plug it into your USB port either phone charger, or a car USB port and it will tether a wifi through your 3G