Each SoundFly ships with the appropriate plug adapters for your country—in the U.S., you get both two- and three-prong plugs—and each measures 7.5 inches wide, 2.8 inches tall, and 3.6 inches deep and weighs slightly less than one pound.
Both SoundFly models have a pair of touch-capacitive buttons. The first is actually integrated into the JBL logo in the center of the speaker grille and acts as a power button. On the SoundFly BT, the button simply toggles power on and off. On the SoundFly Air, pressing the power button briefly puts the speaker to sleep; you can wake it by either pressing the button again or by sending AirPlay audio to it. Pressing and holding the Air’s power button for three seconds puts the unit into Eco-Standby mode, from which you must manually wake it up by pressing the button again. Both SoundFly models automatically go to sleep after ten minutes of inactivity.