... do accordingly,with CE and RoHs certification. LED Portable sample Case,Portble LED Light Case,led bulb suitcase ... the case according to your design1,Cool color watt meter 1 and 2 is more expensive,The fuction ... is the same,the difference is color meter 1 show all datas on one screen and ... screens.2,the white watt meter is cheaper,it just could show:power,curent,voltage. Portable LED Demo Kit