Designed to deliver improved audio performance for home theaters, computers, tablets, smartphones, iPods, MP3 players, DVD players, and other portable audio devices via Bluetooth 3.5mm and RCA connectivity, the CA-3712BT 2.1-Channel Bluetooth Speaker System with LED Lighting from Cyber Acoustics provides high-efficiency, long-excursion drivers combined with a low-distortion, high-powered amplifier to provide clarity with deep bass and a wide dynamic range. Each 2" speaker delivers 4 Ohms of power, and the 3" subwoofer has been built with a 4" passive radiator. The subwoofer also contains system controls such as an on/off switch, master volume control, treble and bass controls, a headphone jack, and an aux input. Complementing the audio qualities of this 2.1-channel setup are multi-colored lighting effects, which can help to create moods or enhance music, movies, and parties. The available colors include green, blue, red, purple, yellow, or light blue, and they can be set to continuously shift or completely turn off.