AirPods 2 vs. AirPods: What's changed with Apple's new earbuds?
https://www.cnet.com/news/new-airpods-2-vs-airpods-whats-new/
The new AirPods offer a wireless charging case, as we expected. You can buy it with the new AirPods themselves ($199, £199, AU$319), or if you'd rather add wireless charging to your first-gen AirPods, you can buy the case separately for $79.
The new AirPods are also available with a standard charging case for $159 (£159, AU$249).