Qi (pronounced chee) is the leading wireless charging standard which is has been adopted into almost all major phone manufacturers.
Wireless charging allows you to charge a device, like your smartphone, watch or even ear pods without the use of a charging cable. The concept, known as inductive charging, allows electricity to be transmitted through the air by means of a magnetic field. A transmitter such as CHARGit’s wireless charging pad creates an oscillating magnetic field with a receiver such as your phone or Apple Watch. The receiver gathers current through a special antenna, which can then be stored in the device's battery. Read more here