Features: Easy to Operate: Simply connect your speaker/headset with our device, immediately transform your speaker/headset into a fashionable wireless Bluetooth5.0-compatible speaker/headset. Extendable Cable: you can extend the cable to the length you want, more convenient. for home stereos / speaker, car stereos, headphones that is with 3.5mm audio input. Built-in microphone for calls, listening to songs, navigation, video and voice, stable and not lagging Metal interface, stable transmission, durable Specifications: Bluetooth-compatible Version: 5.0 Transmission Range: Up to 10m / 33ft I/O: 3.5mm Female Plug, Mini USB Female Port Power Supply: for DC 5V Size: Mixed Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 x Bluetooth-compatible 5.0 Audio Transmitter/Receiver