Go Wired to Wireless for NFC Bluetooth Audio Receiver Turn old wired devices into Bluetooth smart devices in seconds Upgrade to Bluetooth speakers Plug into the AUX port on a speaker or amplifier to instantly convert to a Bluetooth device, eliminating the hassle of wiring and allowing you to enjoy wire-free entertainment. Compatible with all speakers and amplifiers USB playback support for plug-and-play Compatible with removable storage devices and USB flash drives, allowing you to play music even without an internet connection. USB playback is even more convenient for NFC functionality: Connect with a single tap Supports NFC mobile devices for easy connection, no manual connection required High-definition HIFI sound with powerful bass High-quality Bluetooth decoding chip for superior sound quality with lossless and zero latency Name: for NFC Bluetooth Receiver Bluetooth Version: Bluetooth 5.3 Signal-to-Noise Ratio: >110dB Connector: Stereo Analog AUX 3.5mm Performance: HiFi Level Non-removed weight: 72.5g Model: BT-200 Frequency response: 10Hz-20kHz Distortion + noise: <0.02% Support: A2DP/AVRCP Effective range: 15m Output impedance: 75 ohms