1.it is a third-party product, not manufactured by Nintendo, but its quality will meet your requirments.
2.if you are look for a switch Nintendo classic controller, this will be your best choice.
3.includes 4 LED indicators to indicate the connect inport (player number) and the battery low power status.
4.Sleep function, automatic POWER OFF.
5.600mAh rechargeable battery pack,it is charged using the Type-c plug in the controller.
6.battery using time: about 22 hours
7. charger time : about 2 hours
This seller provides invoices. To receive one, you can contact them once you place an order.