NEC Aterm mobile WiFi router. Product: Aterm MR04LN Model Number: PA-MR04LN Serial Number: LA45B5X02060680018 IMEI Number: 3590250606680018 The following items are included. *Please note that the charging accessories are missing.* For charging, please use the ones you have at home or purchase them separately at an electronics store. *The ETHERNET cable is necessary if you want to connect to the internet via a wired connection when using the cradle as a home line, so it is not necessary for use as a mobile router.* Contents: ・Product Body (microUSB, microSIM, SIM-free, dual SIM, strap hole, display protection sheet attached) ・Battery Pack ・Battery Cover ・Cradle (ETHERNET) ・Various Instruction Manuals ・Packaging Box ・Optional Accessory: Case for the main unit included. (With carabiner, with belt loop) Missing Items: ・Charging AC Adapter ・Charging microUSB Cable ・ETHERNET Cable (LAN cable) Usage: I only used the mobile router for about two months after purchase because I wasn't used to using a mobile router. Therefore, the number of battery charge/discharge cycles is also low.