Bluetooth retrofit to stereo system and active speakers: enjoy high-quality sound for audio content located on mobile phone, tablet etc., universal connection 3.5 mm jack Bluetooth audio adapter for two: e.g. connect 2 mobile phones with speakers or stereo system, pair devices once thanks to autopairing, then the connection is automatically established when Bluetooth is activated Bluetooth receiver with microSD slot: playlists, audio books, etc. from microSD card (up to 64 GB) in excellent sound quality via the Bluetooth adapter on stereo system or speaker Power supply via USB: USB-A USB-C cable is included, e.g. connect via USB port to a power strip or to the stereo system or with an extra power supply via the socket Box contents: 1 Bluetooth adapter "Link.it solo", 1 USB power cable, USB-A - USB-C (0.24 m), 1 audio cable, 3.5 mm jack - 3.5 mm jack (0.42 m), 1 instruction manual (English language not guaranteed), 2 disposal notes (Triman/WEEE)