Both units are untested. The DX 100 appears to be glued (maybe screwed into?) the Cobra 25 LTD. They're attached as pictured. Both units show wear and tear. They are sold as-is due to being untested. I'm not sure what functionality they have, if any. It would be beneficial to only buy if you know how to work on items like these to restore them to fully functional condition just in case they don't work upon testing.