... .W:13.8kgOn/off switch, 120sec timerUsage:Be sure the UV lamp and every part fix well before using it.1 ... stop when time’s up.4, Using 4*9w bulb, please replace the UV bulbs every 6 months, be sure to turn ... off before replacing.Notice:1, Don’t stare at the UV bulb straightly2, In order to keep the efficiency, please operate according ... gel manual, don’t shorten or use over time. nail uv lamp