【TRANSMITTER + RECEIVER 2 IN 1】The portable Bluetooth adapter can be used as a transmitter or a receiver. With the latest version of Bluetooth 5.0, it can pair with two headphones/speakers at the same time. 【APTX LOW LATENCY】With aptx low latency technology, enjoy less than 95% latency from other devices, which can provide more stable sound, you can watch TV/movie/video in perfect synchronization. (The device you used must support aptx low latency.) 【MORE OPTIONS, MORE FLEXIBLE with 3.5mm + OPTICAL】Wireless Bluetooth audio adapter supports connections optical digital and AUX. With the supplied cable, it can be used for TVs, stereos, laptops, headphones, MP3/CD players and cars with AUX input. 【AUTO RE-PAIRING】The Built-in battery can ensure 15 hours of use, and it automatically re-pairs with previously paired devices. 【WIDE WORKING RANGE】Working distance is up to 10 meters (unobstructed) . And this bluetooth transmitter supports constant streaming. Product Description What's in th