Philips 21PT9467 21" Ultra SlimLine TV. Display diagonal: 533.4 mm (21 "), Aspect ratio: 4:3, Display: Slim picture tube. Analog signal format system: NTSC PAL (all versions) NTSC PAL N PAL M. Audio system: Stereo SAP, RMS rated power: 2 W, Sound enhancement: Balance Incredible Surround Treble and Bass Control. Colour of product: Black. Power consumption (standby): 3 W, Power requirements: AC 100-240V, 50/60Hz