Description - rechargeable lithium ion battery. Safe and gentle on the most sensitive skin no more painful or smelly hair removal methods no more nicks, cuts, bumps or burns use anywhere thereâs unwanted hair - safe on all skin types and colours how to use - it is move power switch to "on" position (toward the sensa-light head) power LED flashes when "on" front LEDs (near sensa-light head) will flash at 0. 5 Seconds to let you know product is ready when the sensa-light head comes in contact with your skin, the unit will activate and remove hair as long as the head is against your skin the unit will go to "sleep, " automatically deactivate, 6 seconds after you remove the sensa-light head from your skin the unit will reactivate when reapplied to skin upon completing the hair removal, simply move the power switch toâoffâto shut down the unit trimmer size - 12. 5x1. 5Cm package includes - 1-rechargableyes hair remover 1-USB charger cord 1-cleaning brush 1-instruction manual.