Specifications Bluetooth version: Bluetooth V5.3 Bluetooth profiles: AVRCP(receiver mode only), A2DP Input parameter: 5V 1A Charging port: Micro USB Package 1x Bluetooth Audio Transmitter/Receiver Adapter1x Micro USB Data Cable1x 3.5mm Audio Cable1x User Manual 3-in-1 Bluetooth Transmitter Receiver A. Transmitter mode Enable your Non-Bluetooth TV and other devices to stream audio to your Bluetooth headphone / speaker B. PC transmitter mode Enable your Non-Bluetooth computer to stream audio to your Bluetooth headphone / speaker C. Receiver mode Enable your Non-Bluetooth stereo system to play streamed music from your phone/tablet Multifunctional Bluetooth adapter with microphone function A Must-have Driving Companion. It provides a simple hands-free solution for answering and receiving phone calls while driving. Built-in sensitive microphone makes catching up with family or friends a breeze. It turns your car speaker into Bluetooth speaker. Hands-free calls / GPS / Music / Driving Safety.