Battery backup for timekeeping while power off. 12 or 24 hours time format. Dd: mm: yy / mm: dd: yy date format.10 brightness level (including 0 for tubes off). Direct brightness control via the rotary encoder located in the back of the unit. 4 daily intervals for tubes brightness adjustment. Daylight Saving Time for Europe / US / disabled. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "monjibox" and is located in this country: RO. This item can be shipped worldwide.