Choose a converter that will handle a wide range of wattages, accommodating everything from clocks to hair dryers.
Get a converter with overload protection. That way, the converter will shut off if the circuit is overloaded.
Choose a converter with an automatic restart feature.
Consider including something else with your gift, since a converter is relatively inexpensive (between $15 and $20). You may want to choose a converter combined with another item, such as an adapter, a transformer or a surge protector.
Remind the recipient that most converters run on battery power, which means they have to be recharged periodically.