Package Includes:- 4x Power Dynamics NCBT5B 5.25-inch black wireless Bluetooth ceiling speakers (2 active + 2 passive units)- 2x installation speaker cable kits- 2x power cablesTransform your home's audio setup with this comprehensive two-room wireless Bluetooth ceiling speaker system. Providing effortless connectivity and installation, the NCBT5B offers independently controlled stereo audio streaming in two separate rooms, allowing different media to play seamlessly from multiple mobile devices. Each room's speaker set includes one active Bluetooth ceiling speaker with integrated Class-D amplification and one passive unit, linked via supplied speaker cables to deliver high-fidelity stereo sound.These active Bluetooth ceiling speakers boast advanced Bluetooth 5.0 technology, ensuring improved connection stability, increased streaming distance, and a quicker device pairing experience. Effortlessly stream music playlists, podcasts, or audio from video content in clear and detailed stereo sound quality.The two-way coaxial speaker arrangements feature separate woofer and Mylar tweeter drivers with an integrated crossover, providing exceptional frequency separation. This design enhances audio clarity, enriching listening experiences whether you're enjoying ambient background music or engaging video audio.Aside from Bluetooth streaming, there's also a convenient wired line input connection on each active speaker pair. Connect easily with non-Bluetooth devices like televisions, CD players or audio receivers, creating a versatile active ceiling speaker solution suitable for diverse home entertainment setups.