【BLUETOOTH AUX RECEIVER FOR CAR】 The 3.5mm Bluetooth Aux receiver can convert your old car audio/home stereo/3.5mm wired headphones/speakers into wireless. Compatible with most Bluetooth-enabled devices, such as smartphones, tablets, laptops, and computers. 【ENJOY HANDSFREE CALLS & WIRELESS MUSIC】 This Bluetooth AUX receiver can be paired with Bluetooth devices, and the built-in microphone can be used to answer hands-free calls. One button to answer, reject, hang up, and redial the last number. Designed with MFB and volume up/down button, it's very convenient to adjust music volume. 【BLUETOOTH 5.0 & DUAL CONNECTION】 The Bluetooth receiver is equipped with Bluetooth 5.0 to ensure a stable connection. It can connect 2 devices simultaneously, so you won't miss any calls while listening to music. Bluetooth range up to 33 feet without obstacles. Automatically connects to the last connected device. 【FAST CHARGING & LONG BATTERY LIFE】 One button to turn on and enter pairing mode. The built-in battery has a long lifespan and can support up to 16 hours of use after a full charge. Fast charging and can be fully charged in 2 hours. 【PORTABLE】 Weighs only 0.5 oz, very small size. You can take this Bluetooth audio receiver with you wherever you go. A great companion for drivers. If you have any problems during use, please let us know and we will help you at any time.