This product is a "Mimamol GPS Next" 365 days of unlimited use (no return required). It does not need to prepare SIM cards, so you can use it from the day you received it. It is also compatible with the domestic satellite "Michibiki" radio waves and NTT Docomo LTE circuit, with the best search accuracy of past with almost no errors anywhere. This product is NTT. This is a GPS device offered by Docomo, but the customers can use it regardless of their smartphone line carrier. It uses a Zenrin map system, so you can also see your address information at the local level. It can be used immediately after arrival. No troublesome initial setup or SIM contract is required. Of course it is unlimited use, so there will be no monthly fees or additional charges besides the amount you paid for. Approximately 550 continuous search cycles on one full charge! Of course, you can use it multiple times if you recharge it. It is completely silent and vibration-free when searching. The main unit is ultra lightweight 1.1 oz (30 g). The compact design makes it completely unobtrusive when carrying. Comes with a dedicated magnetic case, so you can attach it to your car or motorcycle. No need to download the app! Just log in on the dedicated site, and you can use it immediately. You can use the line carrier for your smartphone or tablet. Can be used normally in WiFi environments.