Features:brand new and high qualityWireless noise reduction technology, clearer sound, easier and faster connection, more stable signal, faster transmission.Transmit and receiver 2 in 1.Low-latency audio ensures that your Bluetooth-compatible wireless device can provide sound synchronized with visual media.One-key mode switching, blue light receiving, red light emitting. It reduces latency and improves the speed of audio transmissionProvides a high-quality, synchronized user experience for your mobile phone connected to stereo / earphone, convenient and quick. Adopts advanced bluetooth-compatible 5.0 module, with Hifi high-quality sound effect .You can enjoy the freedom of wireless in applications such as games and watching videos. Specifications:Name: Bluetooth-compatible Audio AdapterBluetooth-compatible Version: 5.0Function: Bluetooth-compatible Audio Receiving And Transmitting ComboBuilt-in Noise Reduction Hifi Sound Quality Transmission Signal Distance: 10m Fully Compatible With Automatic Matching One-key Mode Switching, Blue Light Receiving, Red Light Emitting Input Interface: 3.5mm Input Voltage: for Dc/5v 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 Mini Transmitter Receiver1 x 3.5 Audio Cable1 x Manual