... automatically 4. Battery 5. 3colors for your options facial moisture analyzer: Features:Displays moisture contentLCD backlightDisplays results in 6 secondsRefined appearanceEasy to useSpecifications ... pink/white/redApplication Method:Remove the cap of the skin analyzer, where you will see metal probesPress the start button, place ... very dry skin34~37%, dry skin38~42%, normal skin43~46%, moisture skin