... 2, Different colors available 3, 4*9w 4, 120sec timer 1, CE certificate, product quality certificate2, Different colors available3, 4*9w4 ... :13.8kgOn/off switch, 120sec timerUsage:Be sure the UV lamp and every part fix well before using it.1, ... 4, Using 4*9w bulb, please replace the UV bulbs every 6 months, be sure to turn lamp off before replacing. ... manual, don’t shorten or use over time. nail uv lamp