Instruct: Classify the given review into positive or negative sentiment.
Query: It DOES work with HCx

I originally thought that this item doesn't work with the HCx, because the battery cover doesn't fit, but like many people said in other reviews, your HCx came with a clip that attaches to the back of the battery cover. I got my HCx used, so it did not have this clip. If you search for "eTrex Mounting Clip Replacement" you should be able to find it though.