?Easy Operation?There are Multi-functional buttons on the Bluetooth transceiver, you can pause/play music, skip next/last track, increase/decrease volume just by operating the adapter, very convenient. (Only applied for Receiver Mode). As soon as the power is turned on, the transceiver will automatically connect to the last connected device. ?Always On/Long Battery Life?The Bluetooth adapter continuously streams even while charging. Built-in 300mAh rechargeable battery serves you about 10+ hours after 1 hour of full charge. Full charge before use, this will be the best condition (remember to disconnect the USB charging cable). Enjoy your favorite wireless content all the time. ?Upgraded Bluetooth Transmitter for PC?Plug the Bluetooth transmitter into non-Bluetooth computer with USB cable can make it Bluetooth-enabled. No 3.5mm audio cable / driver are required. After powering off the computer, it can still power the transmitter and stay connected. ?Bluetooth Everywhere?Works with non-Bluetooth PC or device with 3.5mm audio interface. Realizes wireless connection with various Bluetooth devices by connecting the transceiver to non-Bluetooth devices. And achieve a connection range of up to 50ft (15m) in open air and up to 33ft (10m) indoors. *Operating range can be affected by multiple factors. ?Transmitter Receiver 3 In 1 Transmitter mode: wirelessly transmit audio from non-Bluetooth audio sources (TV, PC, CD / DVD player, etc.) to Bluetooth headphones / speakers. ?Receiver mode: wirelessly transmit audio from Bluetooth audio sources (smart phone, tablet, etc.) to non-Bluetooth headphones / speakers / home stereo system. With only one switch, you can easily switch between transmitter and receiver modes! Note that you must choose the correct mode or it will not work.