This Bluetooth AUX receiver adopts A2DP and AVRCP protocols for hands-free function and common control function. Moreover, there's no need for frequency matching, which means that AUX audio output design with 3.5mm interface can be directly connected to the AUX interface of the car, which avoids the problem of broken sound and noise caused by frequency interference. Come and get it to enjoy music in car, even in charging status. Features: Stereo Bluetooth - After matching the Bluetooth of the mobile phone, you can directly play the music of the mobile phone without external audio source. Hands-free function - With built-in microphone, matching mobile phone can realize hands-free calling for easy operation. USB interface for easy and convenient charging - The player has a USB mobile phone charging interface, and the output voltage and current is 5V/2.1A, which satisfies all mobile phones and tablets, and can be charged while listening to music. Wide voltage design - Support voltage range of 12-24V, suitable for a wide range. With AUX audio output and standard 3.5mm audio interface design, the receiver can be directly connected to the AUX interface of the car for lossless audio transmission and high-quality sound. Specification: Type: Bluetooth Audio Receiver Model: BC10 Output: 5V/2.1A Bluetooth: 3.0 standard (Supports A2DP; AVRCP) Audio transmission: Lossless transmission, standard 3.5mm audio output Applications: All car audio with AUX IN audio input Bluetooth hands-free function: Yes Support common function control functions (such as play/pause; upper track; lower track, etc.) Support remote control function: Optional Key backlight: Yes Material: ABS Weight: Approx. 37g Size: Approx. 134 * 62 * 23mm / 5.3 * 2.4 * 0.9in Package list: 1 * Bluetooth Audio Receiver 1 * User Manual Note: Please allow slight error due to manual measurement. Thanks for your kind understanding. 1、Stereo Bluetooth - After matching the Bluetooth of the mobile phone, you can directly play the music of the mobile phone without external audio source. 2、Hands-free function - With built-in microphone, matching mobile phone can realize hands-free calling for easy operation. 3、USB interface for easy and convenient charging - The player has a USB mobile phone charging interface, and the output voltage and current is 5V/2.1A, which satisfies all mobile phones and tablets, and can be charged while listening to music. 4、Wide voltage design - Support voltage range of 12-24V, suitable for a wide range. 5、With AUX audio output and standard 3.5mm audio interface design, the receiver can be directly connected to the AUX interface of the car for lossless audio transmission and high-quality sound.