Features 1、Through the Bluetooth audio receiver, the wired speakers can be transformed into wireless speakers in seconds, making it easy for home speakers to play music. 2、It has a Bluetooth 5.0 chip, which ensures that high‑fidelity wireless audio signals will stream music to speakers or home stereo systems that do not have this feature. 3、Turn non‑wireless devices into wireless devices through Bluetooth audio receivers, which are easy to insert, pair and play, allowing you to enjoy high‑quality music while playing. 4、Plug into computer speakers or other speaker systems via 3.5 mm or RCA cables, and then pair with Bluetooth audio devices such as smartphones or tablets for easy use. 5、Support short‑distance wireless connection, built‑in chip, support touch connection of mobile phone device without manual connection, simple and convenient, flexible operation. Specification Item Type: NFC Bluetooth Audio Receiver Material: ABS Bluetooth Version: V5.0 Bluetooth Protocol: A2DP / AVRCP Effective Distance: Approx.15m / 49.2ft Interface: RCA / AUX / USB Frequency Range: 10Hz-20kHz Signal to Noise Ratio: > 110dB Impedance: 75Ω Support Short‑Distance Wireless Connection Function Package List 1 x Bluetooth Receiver 1 x Charging Cable 1 x 3.5mm Audio Cable 1 x RCA Line 1 x Manual