Makita MR051 is superior to the Makita RM02, but neither model is made anymore.
I tested the same weak AM signal on 2 different model Makita mini-radios, this model on a fully charged battery did not go as loud on a weak station that when set at the same volume level, the older model MR051 went much louder, but that's on a weak AM signal, on a local FM signal, the volume is a bit closer, but that one difference is enough for me to recommend the no longer made Makita MR051 over the RM02 model.
Better yet, just about any BT job site radio in the same price range as the RM02 is likely to be better and you might be able to use the batteries for more than just to power a stand alone radio and no current power tools like the 12 volt system the RM02 uses.
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