This is a SIM-free mobile router. The connection is stable. I used it when I was out and about, and for backup purposes. It's been a few years since I bought it, but I haven't used it very often. The battery can be charged to 100%. Depending on how you use it, I think it will last a day with normal use. This is the main unit and battery for sale. (A Micro USB cable for charging is included) No other accessories are included. I will ship it within 24 hours. NEC LTE/3G compatible mobile router, Comfortable connection with 100% battery. - Model Name: Aterm MR04LN - Connection Type: LTE/3G - Wi-Fi Frequency: 5GHz - Bluetooth: Supported - Battery Level: 100% - Serial Number: A4:12:4E:EB:29:16 Thank you for looking.