Originally Posted by jamar

Looks like 3HK is selling a roaming eSIM online for HK$138, includes 10 days unlimited data in select Asian (includes Japan) and European countries as well as US and Canada, and it does not have to be consecutive as long as it's used within 90 days of activation. There's also the ability to top up and buy another day for HK$15 each or 10 for HK$138 after the initial 10 days are used up, which is nice.