Switzerland's postal service said on Tuesday it had begun testing parcel deliveries by unmanned drones, although widespread use of the flying postmen is not likely to kick in for another five years.
Postal service executives showed off the drones for the first time on Tuesday and said initial tests of the machines' post-delivery abilities would run until the end of July.
The snow-white drones consist of four branches with propellers on the end extending from a hollow ring the size of a toilet seat. A yellow box, bearing the postal service logo, is lodged in the middle.
"The drone has an extremely light construction and is capable of transporting loads of up to one kilogram (2.2 pounds) over more than 10 kilometres (6.2 miles) with a single battery charge," Swiss Post said in a statement.
The drone "flies autonomously, following clearly defined, secure flight paths, which are drawn up by cloud software developed by Matternet (the drone's US manufacturer)", Swiss Post added.
Swiss Post, which is cooperating on the project with Swiss WorldCargo - the air freight division of Swiss International Air Lines -, stressed that the drones would be thoroughly tested before being put to wide-scale use.
