1:3-color temperature selectable: cold, warm and cold&warm mode 2:with study mode, relax mode and natural mode 3:5-grade brightness touch dimmer 4:led nixie tube display calendar (time, date, month and alarm) and temperature 5:materials: abs 6:color: white, black or customized 7:type of led: 5730 8:number of led: 27pcs cold: 18pcs/ warm: 9pcs 9:maximum wattage: 10w Color rendering index: more than 80ra Lamp power supply: dc 12v, 1500ma Led calendar power supply: cr2032/3v