Resembling the old iPhone docks, the APR-100 plugs into the AirPods case's Lightning port and acts as a receiver for Qi charging. It does increase the size of the AirPod case by a bit, which may not be as aesthetically appealing.
The $30 Ortek dock will come with safety features, such as a thermal shutdown and over-current protection, so you won't accidentally melt your $159 AirPods. It will take about 1.5 hours to fully charge the case (as well as your AirPods). You will be able to get it worldwide through distributors soon.
Computex 2018: All of CNET's coverage from the show in Taiwan.