TK-AUDIO CEILING SPEAKER -CH718 Product Dimensions: Approx. 103x80mm/4.06x3.15inch. Fully Enclosed Ceiling Speaker: 2.5 inch ceiling speaker unit is dustproof, moisture-proof and poison-proof. High Quality Material: Made of high quality plastic and metal, environmentally friendly, stable, firm and durable. Application: Use in wall or in ceiling home entertainment, home theater, multi room systems, outdoor entertainment areas, decks, patios, pools. Specifications: Maximum Power: 9W Rated Power: 6W Power Tap (100V): 3W/6W Sensitivity: 87 Frequency (-10dB): 130Hz-20KHz Open (1KHz/-6dB): 1 50 ° Rated Input: 100V/70V Impedance Rating: 3. Q/ 1.7K Material: Plastic + Metal Color: White Product Dimensions: Approx. 103x80mm/4.06x3.15inch Net Weight: 500g/1.10lbs