This is the Fujisoft mobile router "+F FS030W". As it is a SIM-free device, it can be widely used with Docomo, au, SoftBank, Rakuten Mobile, and various low-cost SIMs (MVNOs). 【Product Condition】 Operation confirmed. Overall, there are no noticeable scratches, and it is in a clean condition (please check the photos for details). There is no battery swelling. 【Included Items】 (Complete) FS030W Body Genuine Battery Pack Genuine AC Adapter Genuine USB Cable Quick Start Guide (Instruction Manual) Outer Box 【Main Features】 Long-life battery with a maximum standby time of 600 hours. Bluetooth tethering supported, allowing for even more power-saving use. By using the dedicated cradle (sold separately), it can also be used as a home router. Thank you.