Product Information GT012 ultra-thin card-type small car personal GPS tracking device for the elderly and children cars and vehicles real-time tracking 1. Our GPS tracker can only be used with 2G GSM networks, and does not support 3G 4G or 5G networks. If your 3G 4G SIM card can also support 2G networks, you can use it. But if your country has closed the 2G network, we recommend that you choose our 3G 4G GPS GSM follower. 2. This is our 3G 4G GPS GSM follower link 3G 4G GPS follower in our store 3. We need to use a SIM card in the tracker. This package does not include any SIM card. Please purchase a SIM card from the local market. Size Information 86 * 55 * 6mm Packing List Locator *1