✓?Very Easy to Use?No more driver, no more setting, plug and connect. If there is any problem, please feel free to contact the seller. ✓?16 Hours Playtime?This Bluetooth adapter has a builtin battery for up to 16 hours of use as a receiver, it also can work while charging. The charging time is only 1 hour. ✓?Universal Compatibility?The Bluetooth connection of this adapter has a wide compatibility with almost any Bluetooth devices, such as smartphone, PC, smart TV, Bluetooth headphones, Bluetooth speaker, Bluetooth receiver amplifier. ✓?Bluetooth 5.3?Bluetooth 5.3 technology ensures more stable connection, lower latency, larger range, lower power consumption, faster transmission. ✓?Bluetooth Transmitter and Receiver?This Bluetooth adapter can be used as a transmitter with red light on for TV, MP3 player, airplane, projector, NOT musical instrument, or as a receiver with blue light on for car/home stereo, speaker, wired headset.