To charge your OV Pro headphones plug the provided USB cable into the headphones port by opening the cover on the right side bottom and plugging in the USB cable. Plug the other end into a USB charging device such as your laptop, car adapter, or other USB port. The light on the headphones will turn red when charging and green when charged. The light is near the USB port on the headphones. OV Pro utilizes a USB-C charging port.
You can use your headphones while it is charging however you are limited by the cord length.
When there is a low battery, the headphones will play a prompt “low battery” about every 30 seconds.