I purchased some sample CYT3005 40mm diffused pixels which can be found here: http://www.aliexpress.com/fm-store/701799/209889132-320695400/LED-Pixel-Light-point-light-source-waterproof-40mm-diameter-9pcs-led-CYT3005-IC-512-gray-scale.html they also come in 50mm and 60mm There is a website link on the board - www.hxwei.com but that website no longer comes up. Here is a google cached version of it: http://translate.google.com/translate?hl=en&sl=zh-CN&u=http://www.hxwei.com/pdetail.asp%3Fid%3D103&ei=Qx2DTKC_ApSknQeiutipAQ&sa=X&oi=translate&ct=result&resnum=3&sqi=2&ved=0CCIQ7gEwAg&prev=/search%3Fq%3Dwww.hxwei.com%26hl%3Den These are "sealed" units with a translucent top attached to a black plastic base. So, after ripping off the top, the first thing I noticed was that there was water trapped INSIDE the pixel. You can see rust on the top and bottom of the board. The "sealing" job consisted of rock hard silicone sealant around the inside edge of the board. I'm not sure I fully understand why there is even silicone sealant other than to hold them in, because it doesn't even stick to the plastic - I was able to pull it out cleanly with just my fingers. The wire is fairly heavy gauge and the circuit board is fairly strong. I'm not sure how the color output is since I don't have a 3005 driver. There is also no way to know the direction the string should be driven since there isn't any external markings that I can find. I'd think twice about purchasing these sealed pixels based on the quality issues I've seen so far. See sample photos below.