Bluetooth 5.4 Audio Transmitter Receiver 3.5MM AUX Hifi Stereo Music Adapter with Mic for Car Airplane TV PC Headphone Feature: [LED Indicator Display & Hands-Free Call ] Bluetooth car adapter with LED indicator, Bluetooth working and connection status can be easily identified, which is convenient to use. Hands-free design makes your driving easier and . click the button to answer or hang up the call, long to reject the call, double click to redial the call. [The Latest Bluetooth Version 5.4] Aux Bluetooth adapter built with Bluetooth 5.4 technology, combining A2DP profile, reduce power consumption and offer stable connectivity and excellent signal stability. [Dual Pairing, Share Your Happiness] In TX mode, the Bluetooth audio transmitter can connect two stereo Bluetooth headsets or stereo speakers at the same time, and the two headsets/speakers can sound simultaneously. Bluetooth transmitter can satisfy your idea of watching with your lover/friends/family with Bluetooth headphones. [ Low Latency] Featured with Low Latency, you can watch video while listening to wireless audio without any noticeable audio delay. NOTE: your receiving device is better also support function of Low Latency. Or the receiving device might use another codec (e.g. , ,HD). [Long Service Time] The Bluetooth receiver for home stereo can be fully for 2 hours, with a 150mah battery capacity, support constantly working for 15H in transmit mode and 20H in receive mode (charging input requirements: 5V DC ). Color: Black Material: ABS Package Contents: 1 x Transmitter Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.