HIGH SPEED INTERNET: Supports LTE CAT4 standard, 300Mbps high speed Internet access, but it mainly depends on the strength of the signal. It has a SIM card slot and a 3650 mAh battery. It can work with external power supply, no working time limit. It can be charged via computer USB port, power bank, car USB charger, power supply. If it works for a long time, it needs to dissipate heat.PROFESSIONAL DESIGN: it is a WiFi modem router. No need to connect to broadband, as long as you have a 4G 5G SIM card, you can connect to the network, a backward compatible WiFi hotspot device that provides your device with extremely fast internet speeds, even when there is no 5G network.NETWORK BAND: This 4G LTE USB Modem supports network band FDD LTE B1 B3 B5 B7 B8, TDD LTE B40, 3G WCDMA B1.It can be connected to 10 devices at the same time, support smartphones, tablets, laptops, etc.The effective distance of the WiFi can get 10 meters. One person owns it, the whole family shares it.HOW TO USE: Insert SIM card and press the power on button to turn on the router, even if your SIM card is compatible with the hotspot WIFI device, it may not be plug and play, you may need to disable the SIM card PIN code and modify the APN . Enter the IP address of the router: 192.168.100.1 Click Network APN Enable. modify the APN. make sure the SIM card is active.LONG BATTERY LIFE, COMPACT AND LIGHTWEIGHT: Builtin 3650mAh battery can be used continuously for more than 10 hours and online all day long. Whether you are at home, at work or traveling, the mobile Internet hotspot device allows stable and fast WiFi to follow you around the world, only 0.23 lbs, put it in your pocket, little burden on the road.