SIM & Plan is compatible with majority of 2G, 3G & 4G LTE GSM GPS Trackers and smart watches. Use 500 units any way you want in any combination of Talk/Text/Data for 30 days; Plan includes 500 Minutes or 500 Text or 500MB Data for 30 days. No activation fee. No Contract. No credit check Punch out the 3-in-1 ready to use SIM card. Standard SIM, Micro SIM and Nano SIM. A new number is auto generated upon activation of service.