Durable and easy to install. Fine workmanship and classic design. Z358 Mini Passive 12W Ceiling Speaker for Home Theater Bathroom Specification: Power: 10W Impedance: 8 ohms Sensitivity: 85dB 3 inch full range speaker driver Aluminum cylinder shell Installation Cutout Size: 95-100mm Note: This is a passive speaker; it must be connected to an external amplifier. Material: Metal + Plastic Color: Silver Package Contents: 1 x Bathroom 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 allows an error of +/- 1-3cm.