... .W:13.8kgOn/off switch, 120sec timerUsage:Be sure the UV lamp and every part fix well before using it.1, Power ... the lamp with 120sec timer.3, It will stop when time’s up.4, Using 4*9w bulb, please replace the UV bulbs ... every 6 months, be sure to turn lamp off before replacing.Notice:1, Don’t ... gel manual, don’t shorten or use over time. nail uv lamp