The wireless charger charges the wireless charging case, and the wireless charging case charges the headset. For the wireless charging box, the official website explains as follows: \"The charging box can be charged wirelessly through a charger that complies with the Qi standard, or through the lightning interface.\" Even if there is no wireless charger, you can use the lightning interface to charge the wireless charging case. Qi standard wireless charger has a lot, Apple official has: (price 478) Millet wireless charger may be a more cost-effective one. (Price: 99)