It's a 4g lte router, with 2.4ghz band and works fine. It can also work as a wireless access point via its dedicated wan port. Meaning if you want to extend wifi, mr6400 will do the job or you want to share your sim card internet over wire or wireless it still stands or you want both that is use sim card and fiber/microwave if one goes off it will failover. Mr6400 still does the job.