Yes, you can use the post boxes at the airports.
For airport postbox locations, please refer to the airport postbox locations page.
Please note that you need to return the device before entering the restricted area (areas after the security check).

*Please do not ask the hotel staff or airport staff to return it for you, as they may not take responsibility when it's lost.
*At our Airport counters, they are only for pickup, so they cannot accept return items. Please drop it in a Post Box ONLY.