4 daily intervals with user programmable brightness levels (including 0 for tubes off). 12 or 24 hour format. Date format dd:mm or mm:dd (user selection).Stabilized high voltage for bulbs, high efficiency power supply, low heat and long life. Direct brightness control by rotating the encoder. Settings are based on a single button, located at the back of the unit. Power supply adapter included 100-230V input, 12V stabilized output. For some countries socket adapter for outlet (not included) may be required. Size: 22 10 cm base, 19 cm tall. This item is in the category "Sound & Vision\Vintage Sound & Vision\Vintage Parts & Accessories\Valves & Vacuum Tubes". The seller is "monjibox" and is located in this country: RO. This item can be shipped worldwide.