... incandescent bulb:4320hx30w/1000=129.6° one30w led bulb:4320hx3w/1000=12.96 (360 days ... 4320h)2.environmental protection and security mercury free no ultraviolate,no mosquito gather nonglass material ... over load,short circuit ,over temperature protection3.color rendering index:>75 good light transmittance,can ... years.so better to forestall. can match with power ,remmote controllor,light modulator base on ...