Bluetooth transmitter enables wireless audio, using a standard 3.5mm headphone jack Capable of pairing with two sets of AirPods or wireless headphones for sharing listening 10m (33’) reach provides ample space for listening Enables Bluetooth where none exists, to allow wired speakers/soundbars from auto, airplane and boat sound systems to receive audio input from your favourite device AUX IN capability lets you stream audio from your iPhone to an auto or non-Bluetooth speaker Over 25 hours of battery life per charge provides ample listening