id: 1</br> Model: Sony WH-1000XM4</br> color: White</br>  size: Large</br>  battery level: 100</br>  on: its off</br> The headphones are off</br>  volume: 50</br> The headphones are off</br>  battery level: 100</br>  on: its on</br>  volume: 51</br>  volume: 50</br></br></br>id: 2</br> Model: Beats Solo3</br> color: Red</br>  size: Small</br>  battery level: 100</br>  on: its off</br> The headphones are off</br>  volume: 50</br> The headphones are off</br>  battery level: 100</br>  on: its on</br>  battery level: 0</br>  volume: 51</br>  volume: 52</br>  volume: 51