International prepaid Micro-SIM card with $10.00 airtime credit Traveling overseas? We offer a simple and affordable solution! WorldTravelSIM Micro-SIM card offers up to 90% off carrier roaming rates. WorldTravelSIM Micro-SIM card and prepaid airtime credit will never expire! US and UK mobile number. Works in the USA and in over 200 countries FREE USPS Mail. No Contract, No Credit Check, No Monthly Charge