... .8kgN.W:13.8kgOn/off switch, 120sec timerUsage:Be sure the UV lamp and every part fix well before using it.1 ... , Using 4*9w bulb, please replace the UV bulbs every 6 months, be sure to turn lamp off before replacing.Notice:1 ... , Don’t stare at the UV bulb straightly2, In ... gel manual, don’t shorten or use over time. nail uv lamp