In each hospital there are some operation rooms, and in there the core product is shadowless surgical light. Model RC-DTR78+DTR78 is one high-end double-dome shadowless surgical light, which has very some special functions:1)color temperature adjustment, 2)electric & manual focusing, 3)R11 mode (green mode) ,4)high color rendering index suitable for neurosurgery, 5)R9 mode (red display index).