40 / 60W16 Ohm60 - 20,000 Hz (-10dB)100 V20 W transformer (2.5/5/10/20W)For ceilings of thickness 1 - 20 mmOuter diameter: 205 mmInstallation depth: 80 mmCeiling cutout: 183 mmWeight: 1.62 kgExtremely flat designColour: White (RAL 9010)5 Year manufacturer's warranty