Speaker Type Active Nominal Output Power 3.6 Watt Frequency Response 180 - 20000 Hz Amplifier Integrated Dimensions (WxDxH) 29.8cm x 1.8cm x 2.4cm Weight 114 g Design Features Built-in magnetic mount Recommended Placing Under-the-monitor Power Source USB Designed For U2421E, P2721Q, P3221D, P3421W, U2722D, U2722DE, U2422H, U2422HE, P2222H, P2422H, P2422HE, P2722H, P2722HE