Features: 1.Fitment: Support car radio equipped with an audio input. Perfect fit for Clarion, for Blaupunkt, for Pioneer, for Alpine, for JVC, etc. 2.Equipped with Remote Control: Wireless remote control, the operation is simple and easy to understand, supports BT audio, USB Flash, 3.5 audio jack input. 3.With usb jack: This audio transmitter with usb port, support USB2.0 devices, such as U disk, SD card, SDHC, MMC, etc. and support MP3 and WMA music formats. 4.Bluetooth Use: You can use mobile phone searches for the Bluetooth device "KROWN 998" and connects it to complete CD playback through Bluetooth. 5.Support DIY Operation: As long as you can find the audio input interface of the CD, connect the left and right channels, and power on to complete the work. Specification: Item Type: Bluetooth Music Handsfree USB AUX Adapter Voltage: DC12V Signal to Noise Ratio: 90dB Current: 200mA Total Harmonic Distortion: 0.01% Frequency Response: 20hz-20khz Working Temperature: -30~80 Battery Type: Button Battery (included) Battery Model: 1 x CR2025 Battery Capacity: 150mAh Applicable: Universal Car Support Car Audio: for Clarion, for Blaupunkt, for Pioneer, for Alpine, for JVC, etc. The car radio must be equipped with an audio input Function: Number of supports: digital wireless audio can support 99 folders, most OEMs can only support 6-9 folders LAST location memory: digital wireless audio support memory playback via remote control, once you turn off the engine, or you choose other types of CD or AM FM playback, he will memorize the disk/track number, when you return to digital wireless audio playback state , he will continue to play from the MCU memory point (only support AUX and Bluetooth, do not support U disk) Bluetooth use: The mobile phone Bluetooth search device "KROWN-998" can be connected to it to complete CD playback through Bluetooth, and the input of three audio sources, AUX, USB and Bluetooth, will be converted in priority mode. Mobile phone calls have the highest priority. After exiting, turn to the music playback mode before the call PackageList: 1 x Decoder 1 x Microphone 1 x Microphone Dust Cover 1 x Microphone Mounting Bracket 1 x Clip 1 x Instruction Manual 1 x Remote Control 1 x Adapter Cable 1 x Audio Cable