Even though the SoundTouch 10, 20 and 30 all offer Wi-Fi, Bluetooth, and Apple AirPlay 2 compatibility and effortless one-touch presets to access your favorite streaming music, they each provide different levels of performance for different-sized rooms in your home. The SoundTouch 10 is our smallest SoundTouch speaker that delivers full, rich sound and Bose performance that seems to defy its size. The SoundTouch 20 – Series III is a compact, wireless speaker that delivers clear, room-filling sound. The SoundTouch 30 – Series III is our best-performing, one-piece wireless speaker with Bose waveguide speaker technology that produces deep, rich sound to fill your largest room. Another difference is that both SoundTouch 20 and 30 display in-depth song, artist, station and connectivity information on an OLED screen whereas the SoundTouch 10 displays simple connectivity information via 4 LEDs on the front of the product.