Impedance 70 Volts 4 Dual cone 10 Watts maximum power Humidity to be normal 40 2C Hum 90 95 48H Heat Test to be normal 70 2C 48H Waterproof Dimensions 4 57 L 116mm 1 2 W 31mm 4 57 H 116mm Accessory 4 New Construction Kit Color White