... product quality certificate2, Different colors available3, 4*9w4, 120sec timer36w UV lamp Detailed descriptionVoltage: 110-120v/220-240vPacking quantity: 12pcs/cartonPacking ... off before replacing.Notice:1, Don’t stare at the UV bulb straightly2, In order to keep the efficiency, please ... operate according to the gel manual, don’t shorten or use over time. nail ...