Quick overview from the supplier:
LTE Mobile Wireless Mini Router TP-LINK "M7450", AC1200, microSD, Dual Band, 3000mAH
// LTE-Advanced cat6 supported with up to 300 Mbps download and 50 Mbps upload speeds
Supports up to 32 devices simultaneously
Selectable 300 Mbps at 2.4 GHz or 867 Mbps at 5 GHz dual band Wi-Fi
All useful information at a glance with screen display
3000 mAh battery for up to 15 hours of working
Equipped with a micro SD card slot for up to 32GB of optional storage
Easy management with the tpMiFi App