EFORBEST Mini Wireless USB Hotspot, WIFI Router Mobile Wireless Network With SIM Card For Outdoor And Indoor On The Bus Or In Car, Support MicroSD Card Reader(MicroSD card not included) Not only 3G USB Modem! This is USB Wi-Fi Modem Router. Support 2G/3G Network HSPA+/HSPA/UMTS 2100MHz. EDGE: 900/1800MHZ. Work with external power supply, no limited working time. Internet connection sharing, up to 8 users can access the Wi-Fi network at the same time. Able to connect with tablet, laptop, notebook and different types of WIFI devices Please check your SIM network standard and the network band before you buy this product. If you are unsure whether the product is suitable for your SIM card, please consult your ISP.