Enjoy seamless wireless audio and safe hands-free calling with the Earldom ET-BR16 Bluetooth 5.3 Adapter. Engineered for convenience, this plug-and-play device connects effortlessly to car stereos, speakers, headphones, and more via a 3.5mm AUX jack. With multipoint pairing, TF card playback, and DSP-enhanced sound quality, it delivers an all-in-one solution for upgrading your audio experience. Specifications Bluetooth Version: V5.3 Bluetooth Solution: Zhongke Lanxun V5.3 Input Voltage: USB-DC5V Charging Interface: USB-C Connector Type: 3.5mm AUX Material: ABS Compatibility: Laptops, smartphones, tablets, MP3 players, car stereos, and all audio devices with AUX input Key Features Advanced Bluetooth 5.3 technology offers fast, stable, and reliable connectivity Built-in microphone enables one-click hands-free calling for safe driving Supports simultaneous connection of two devices with multipoint pairing Plug-and-play operation with no setup required for instant use TF card slot provides offline music playback anytime, anywhere DSP technology enhances audio clarity for both music and calls Compact, lightweight design made from durable ABS for daily use USB-C charging interface ensures quick and efficient power delivery