Product Name: SF-758 in-Ceiling Speaker with Bluetooth Model NO.: SF-758 FM: Without FM Control: Wired Finish: Plastic Speaker System Audio Output Mode: Surround Sound Player Type: DVD Player Home Audio & Theater Watts Per Channel: <50W Home Audio & Theater Speaker Mount: Ceiling Power: 20-60W Amounting Hole: 180mm Material: ABS Impedance: 8ohm Colour: White Rear Shade: Yes Speaker: 5" Trademark: Houna sound Transport Package: Inner Box/Master Carton Specification: 230mm Origin: China HS Code: 8518290000 Product Description RMS 20W High-Frequency Ceiling Speaker with bluetooth for PA Public Address SystemItem NO:SF-758MaterialABSSpeaker5" Polypropylene cone with rubber surround+1" Ferrofluid cooled silk domeRear enclosureNoRatedPower20WImpedance8ohmSensitivity92dBFrequency Response55Hz ~ 20KHzColorWhiteMax.Power60WAmounting hole Diameter180mmDelivery15-30days5" Polypropylene cone with rubber surround+1" Ferrofluid cooled silk dome