2 Inch Bluetooth Ceiling Speakers Specifications: Input Power: AC90-260V Speaker unit: 2 inch Rated Power: RMS 5W Impedance: 8 ohms Sensitivity: 88dB Frequency response: 70Hz-20kHz Installation Cutout Size: 75-80mm Product Size: 87x58mm Net Weight: 0.24kg NOTE: Only one master speaker can be installed per room, and the master speaker should be positioned in the center. Within a range of 10 meters, multiple slave speakers can be connected. Easy installation; connect to AC85-265V power supply Color: White Material: ABS Package Contents: 1 x Main Bluetooth Ceiling Speaker 1 x Auxiliary Ceiling Speaker Only the above package content is included; other items are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3cm.