For more details on your headphones, earphones or Pill+ speaker, see the documentation for your Beats device:
Set up and use your Beats Flex earphones
Set up and use your Powerbeats earphones
Set up and use your Powerbeats Pro Wireless earphones
Set up and use your Solo Pro Wireless headphones
Set up and use your Studio3 Wireless headphones
Set up and use your Solo3 Wireless headphones
Set up and use your BeatsX earphones
Set up and use your Powerbeats3 Wireless earphones
Set up and use your Pill+ speaker