Main Features: This portable device comes with a SIM card slot and a 3200mAh battery. It can be powered externally, meaning there is no working time limit. Charging options include a computer USB port, car USB charger, and power supplyConnect up to 10 Devices: This 4G LTE portable can connect up to 10 devices simultaneously, making it suitable for smartphones, tablets, laptops, and more. The can reach an effective distance of 10m/32.8ftUsing Method: To use the device, simply insert the SIM card and install the battery. However, note that even if your SIM card is compatible, it may not be plug and play. You might need to disable the PIN code of the SIM card and modify the APN settings4G Hotspot: With a portable mobile device, you don't need a broadband connection anymore. Simply insert a 3G or 4G SIM card and connect to a 4G network. Even if there is no 4G network available, it still offers incredibly fast internet speed for your device300Mbps High Speed: This unlocked 4G supports LTE CAT4 standard, allowing for high-speed internet access of up to 300Mbps. The actual speed may depend on the strength. It supports various network bands such as B1/2/3/5/7/8/20/40