I got this 6.4 IR/UHF PRO remote because it is better than the 21.0 IR/UHF PRO remote that my system came with. The UHF portion works better: (1) functions better from greater distance from the receiver and (2) the keys are easier to push and the keys function for a longer period of time. (The 21.0 remote started having key issues within 9 months of use and was very sensitive to the orientation in ones hand as to whether it changed channels, etc., or not.)
This is exactly the product I needed for my DISH Network DVR. It's a factory piece, not a work-alike, so it works perfectly with my equipment. Compared to what the DISH installer would have charged me, this remote is a steal. Delivery was so fast I couldn't believe it.