1. Scope of Application: All car audio with AUX IN audio input function.2. Compatibility: Bluetooth-compatible version. Bluetooth-compatible 3.0 standard (supports A2DP; AVRCP). Lossless transmission, standard 3.5mm audio output. Frequency Response: 20Hz-20KHz.3. Button Backlight Design: Easy to operate. Easy and simple to upgrade your car stereo Bluetooth-compatible hands-free wireless audio!4. Handsfree: Support Bluetooth-compatible hands-free function, you can listen to music while the any phone! Support for voice .5. Common Function Control: Support common function control functions. You can in the car within the scope of smart devices cozy browse your music on the list to select their own favorite music play / pause; previous song; music selection.Name:Car Bluetooth-compatible Audio Receiver MP3Bt version:V3.0+Frequency range:2.4GHzOutput power class:Class2Bt Mode:HFP//A2DP/AVRCPBt range:up to 30 feetInput voltage:12-24VWorking voltage:DC5VWorking current:DC 5V/8-15mAOutput current:2.1APower source: lighterScope of application: mobile phones/tablets/and various USB charging digital products.Note:Installation guide not included, Please check as much as possible to make sure the item is what you need.Tips:The product may be updated constantly,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect UseColor:BlackMaterial:plasticPackage Contents:1 * Audio ReceiverOnly 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.