APPLE INSIDER
Xiaomi aims for a truly wireless future with the Mi Air Charge system, which is capable of charging multiple devices wirelessly from a distance.
The Mi Air Charge station broadcasts a charging signalTraditional wireless chargers still need to be attached to a power source, be it a battery pack or outlet. The latest technology from Xiaomi, on the other hand, uses radio waves to charge a device over the air — truly without wires.
Source: APPLE INSIDER