Speakers with built-in Bluetooth have become better and better at bringing your music places where traditional wired devices can't go. The market built up around these products is now estimated to grow to the tune of US$2.64 billion in 6 years. This may be driven by increased uptake in emerging economies like India.
https://www.notebookcheck.net/The-portable-Bluetooth-speaker-market-will-be-worth-neary-US-3-billion-by-2025.423129.0.html