Review on HKBAYI 4M WS2812B 5050 SMD Built-in WS2811 IC Black Board LED Strip Lights - 240 LED 240 Pixel Matrix (Non-Waterproof) by Peter Montoya

My WS2812B chain arrived on time. Packaged in a Mylar bag, spooled on a black plastic spool in the form of a 4 meter continuous cord. The Mylar package claims a maximum output of 72W, but that was the only description or documentation that came with the product. I powered this 4m chain + another 10m of 600 rgb 5050 LEDs from the same SMPS with 1000uF capacitors in front of each chain and controller and they worked great. There were two defective pixels in the WS2812B series, one didn't work in green, the other didn't work in blue, but after contacting the seller, the seller offered to send the pixels for a replacement or a partial money refund. I took spare pixels as they can easily be swapped out with a soldering iron and 10 minutes of your time. Truly amazing customer support! Has been working from Arduino for a month with no problems.