-Frequency response: 120-13000Hz
-Input voltage: 100V
-Sensitivity: 90db
-Net weight: 0.73KG
-Gross weight: 18.6KG
-Rated / max power: 20 - 40W
-Install the opening size: Ф162mm
-Product Size: Ф198 * 57mm
-Package Size: 430 * 370 * 435 (20pcs)