TSV 2 in 1 Bluetooth 5.0 transmitter receiver has a dual transmission function, it can connect 2 pairs of Bluetooth headphones or Bluetooth speakers simultaneously in Bluetooth transmission mode. This audio adapter adopts Bluetooth 5.0 version, which has stable sound quality and the transmission signal. You can listen to music unlimitedly and enjoy CD-level lossless sound quality music. This extremely lightweight wireless audio transmitter receiver is the ideal wireless audio solution for a variety of situations and uses. The transmitter mode wirelessly transmits audio from non-Bluetooth TVs, home stereo systems, or CD players to Bluetooth headsets or speakers. The receiver mode wirelessly transmits audio from Bluetooth-enabled mobile phones, tablets, or computers to wired stereos, speakers, or headphones. You can slide the button on the side to switch between receiving and transmitting. This Bluetooth adapter built-in 300mAh large-capacity rechargeable lithium-ion battery, which supports use while charging, with only 2 hours to be fully charged. It is used for 6 hours and is suitable for hot charging while charging. The design of the Micro USB charging port supports continuous playback when plugged in. The built-in power isolation template will not generate heat when used. This Bluetooth adapter is suitable for all kinds of cars, trucks (with AUX audio interface), TVs, computers, set-top boxes, Bluetooth audio, Bluetooth headsets, most audio, power amplifiers, mobile phones, and tablet computers.