3-in-1 transmitter receiver: iSbeller Bluetooth adapter combines a transmitter and receiver with an additional 3.5 mm jack.With the latest Bluetooth V5.0 chip, Bluetooth connectivity is more stable with a wireless range of 30 meters or more.Upgraded Bluetooth 5.0 provides stronger signal transmission and less crackling, hissing or audio degradation.Easy to pair and compatible with 99.9% of Bluetooth devices. Bluetooth audio adapter transmits stereo sound wirelessly from non-Bluetooth audio sources such as TVs, MP3 players, CD players, PCs or e-book readers to Bluetooth devices.- This includes headphones and speakers.Or activate your Bluetooth home stereo to receive wireless music streams from cell phones and tablets. Bluetooth audio adapters are mobile stereo audio devices. Or have your home Bluetooth stereo system receive wireless music streams from your phones and tablets. The Bluetooth adapter has a multi-function button.You can pause/play music, skip the next/last track, increase/decrease the volume using the adapter. It is very practical.(Only for receiver/mono mode)