Giving out 100 Watts of peak power, this is a great little solar-powered speaker to keep you company on a long journey and it is also great for providing music on a beach or by the pool. It has a USB port into which you can plug a memory stick, and there is an SD slot to take a memory card. There is also an 1/8” AUX socket, by which you can connect the speaker outlet of your MP3 player or iPod, so you are not limited to the radio as a source of music. This speaker is solar powered. You are not limited to using the speaker in daylight hours, either, because it has a rechargeable battery. So it can play your music for 5 hours during the night time.