Thank you for viewing. This is a Giga Set Wi-Fi mobile router. It can be used without a monthly fee or contract. There are no remaining gigabytes, so please use it after purchasing additional data (gigabytes)! I used it frequently because it's easy to carry, but I'm selling it because I no longer need it. This is an item for the main unit only. It will be sent after initialization. Charging is possible with TYPE-C, and the instruction manual is available online, so please rest assured!