Philips 20PT4330 21" TV. Display diagonal: 508 mm (20 "), Aspect ratio: 4:3, Screen format adjustments: 4:3 4:3 expand. Analog signal format system: NTSC. Audio system: Mono, RMS rated power: 1x3W. Colour of product: Silver Shadow. Power requirements: AC 90-140V, 50/60Hz