Description: Transmitter and receiver: This bluetooth-compatible adapter helps upgrade old-fashioned stereo systems, TVs, and other media players, making them wireless. Long-lasting: Built-in with a 200mAh battery, the bluetooth-compatible converter ensures a long working life after fully charged. Lossless sounds: The 2-in-1 bluetooth-compatible transmitter features low latency and high fidelity, which provides you with an enjoyable music experience. Compact: The bluetooth-compatible receiver is easy to carry in the backpack, suitable for cars, living rooms, bedrooms, offices, etc. Multiport: Designed with a 3.5mm for jack and for RCA connectors, the bluetooth-compatible adapter is much easier to be connected with audio players. Specification: Interface: for RCA, for AUX. Bluetooth-Compatible Version: 5.0. Transmission Range: Approx. 15m/49.21ft. Battery Capacity: 200mAh (Built-in, Rechargeable). Working Time: Receiving: 8H; Transmitting: 5H. Frequency Response Range: 10Hz-20HKz. SNR: Less than 110dB. Size: Approx. 60x60x18mm/2.36x2.36x0.7 inch. Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Bluetooth-Compatible Adapter (with 1 Piece Charging Cable, 1 Piece Audio Cable, 1 Piece for RCA Cable, 1 Piece User Manual).