NEC's mobile router, Speed WiFi 5G X12 [NAR03], is SIM-free. While there are concerns about data being extracted from Chinese-made devices, this one is from a reliable Japanese manufacturer. It's in beautiful condition, having been used only a few times for short periods. Operation has been confirmed. In the used market, many have scratches on the corners, but I believe this one is in excellent condition. I also checked the battery life, and it hasn't changed from when it was new. I think it lasts plenty long. This condition is valuable, as many have battery degradation from being constantly connected to a cradle. You can use it with Rakuten Mobile, allowing you to have unlimited Wi-Fi for a low price. I use the same model with a Rakuten Mobile prepaid SIM and get 100GB per month for about 2300 yen. Even at a low price, you can use 5G, which is comfortable. The 5G area has expanded considerably in the past year, which is very good. I'll be happy to share more information if you're interested. Also, if you're worried about APN settings, I'll provide careful support. There is also a manual. I will include it if you wish. It will be shipped via Nekopos, so the box will not be shipped, but it can be folded for shipping. Price is not negotiable. The main features of the Speed Wi-Fi 5G X12 [NAR03] are as follows: High-speed communication: Supports 5G and Wi-Fi 6, enabling fast and stable wireless communication. Achieves a maximum download speed of 3.9Gbps. Supports SA 5G, the first for a WiMAX mobile router. Security: Supports the latest Wi-Fi security standard WPA3, enabling stronger security measures. Convenience: Lightweight and compact design for easy portability. Equipped with a 4000mAh battery for long continuous communication. Supports Wi-Fi connection settings via QR code. By using a separately sold dedicated cradle, wired connection and more stable 5G communication are possible. Other: You can easily manage the device and check data usage with the dedicated smartphone app. A new dedicated case is included. The inside is microfiber, so it stays clean just by being in the case.