... .Colorful Night Light Change Aroma Diffuser OperationShort press the AROMA button, indicator lights up, Aroma heating turned on, like essential ... , short press the AROMA button; indicator goes off, Aroma heating Close. Attention:Save time and spare battery for replacement batteries only whenElectrical ... Voltage:4.5VDC Standby Current:<0.5AClock standby current :<2mAButton battery: AG8 1.5V 45mAH two