【Fantastic bluetooth receiver】Adopts the latest Bluetooth technology ISS2020S chipset,equipped with Bluetooth 5.0 chip， high-quality sound quality and strong compatibility. Plug into non-Bluetooth caraudio system, home stereo systems or other speaker systems via the 3.5mm aux audio cable,then pair with Bluetooth devices of digital products such as laptops, mobile phones, and other digital products to realize wireless transmission of music. | 【Long battery life】Comes with outstanding 170mAh rechargeable battery. The working time of this Bluetooth music receiver is up to 15 hours when playing music. And it takes only 2 hours to fully charge. In addition, the Bluetooth Adapter can be used while charging, which is very convenient. | 【 Multi-function buttons & volume control】 Built-in microphone for hands-free calls. You can answer/redial/hang up/reject the call by clicking the multi-function button, which is easy to use and ensures your safety while driving. The bluetooth Receiver has a volume increase/decrease button, which is very convenient to adjust the volume of the Bluetooth audio system. | 【Small & portable】 The mini car Bluetooth receiveris small and lightweight, long press to open the pairing, easy to have a wireless experience. The operation is simple and easy to carry. | 【Memory Function and Dual Connection】The Bluetooth adapter has an automatic connection memory function. When connected successfully for once, it will automatically connect to your phone when the Bluetooth is opened again. It can be paired two Bluetooth headphones, for more immersive entertainment to share with a friend. | 【Package Content】 Bluetooth Receiver Adapter,3.5mm aux audio cable,Micro USB charging cable, user manual .Smof always provide 30 days money back, full 2 years warranty and lifetime technical support.