【Versatile 2-in-1 Design】Functions as both a Bluetooth-compatible transmitter and receiver, allowing you to convert wired audio devices to wireless or connect Bluetooth-compatible devices to non-Bluetooth-compatible audio systems. 【Wide Compatibility】Features a 3.5mm AUX interface, making it compatible with various audio devices including TVs, car stereos, headphones, and speakers. 【Advanced Bluetooth-compatible 5.4】Utilizes the latest Bluetooth-compatible 5.4 technology for stable, low-latency wireless connections with a transmission range of up to 15 meters in open spaces. 【Compact and Portable】With dimensions of 100*22*13mm and weighing only 45g, this adapter is perfect for travel and on-the-go use. 【Long-lasting Battery】Equipped with a 180mAh battery capacity, ensuring extended use time for your audio needs. 【Easy Setup】Designed for user-friendly operation, allowing quick connection of headphones or speakers to TVs or car audio systems within seconds. Specifications: Model: M30 Bluetooth-compatible Version: V5.4 Input Power: DC 5V Material: ABS Charging Port: Type-C Functions: Bluetooth-compatible Receiver/Transmitter Transmission Distance: 15m (obstacle-free) Audio Interface: 3.5mm AUX Battery Capacity: 180mAh Compatible Devices: Mobile phones, tablets, computers, TVs, speakers Product Weight: 45g Product Dimensions: 100*22*13mm