"Birdie Travel SIM" is a travel data SIM card that works in over 50 countries and regions outside Hong Kong and let you add new Day Passes for future journeys. Why "Birdie Travel SIM"? 1. Roam your way through over 50 countries with just 1 SIM. 2. Only pay for the day when you use data. You don’t need to use multiple Day Passes consecutively! 3. Simply switch on “Travel data” on your mobile phone when you landed. You can purchase additional Day Passes anytime, anywhere. 4. Haven’t got you Bir