Built-in Bluetooth for wireless music streaming - works with almost all Bluetooth devices(iphones, Androids, smart phones, ipads, tablets, etc). Support for Bluetooth protocols: HFPV1.5, A2DPV1.2,AVRCPV1.4,HSP1.2, GAVDP1.2, IOP DC 5V 2Apower supply with AC adapter 110V-240V. Frame-mounted spring-loaded clamps provide secure, low-noise connections and easy installation. Attractive color ABS resin finish with white grille suits any decor. Notes: Can connect to TV, and let TV's sound playing in ceiling speakers at the AUX connection terminal by audio cable, can not directly connect to your TV by bluetooth if your TV's bluetooth is only one-way link Colour:White Material:plastic+metal type:A:4 inches (opening 140MM) Package Contents: 1 x Ceiling Speaker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.