If you are ever stranded on a desert island, you should try to make sure you take the Technical Pro wireless WASPSOLAR100 speaker with you. This speaker has an optional solar panel. You don't have to be in the tropics to benefit from the charging power of the sun, because it only needs sunlight and not heat of the sun in order to charge up. 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. Better yet, for the desert island castaway, the speaker has an LED torch light on it. You might think that a functioning speaker is no good if you don't have a power supply for a CD player, or a tuner to plug into the speaker. You don't need any of those things to enjoy your music, because the speaker has a built in tuner and amplifier. So, you can listen to FM radio on the speaker without plugging anything in. There is also a telescoping aerial fitted to the speakers body. The speaker gives out 100 Watts of peak power, so it wouldn't be a good choice of a mobile disco. However, it will keep you company on a long journey, and it is 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 a 1/8-inch 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. There is one other benefit of this speaker it has Bluetooth capabilities. That means you can play the music you have stored on your smartphone, or any other Bluetooth-enabled device, through the speaker. Even if you can't get a signal for calls from your cell, you will be able to set up communication between the speaker and your phone without a cable as long as the two are within 30 feet of each other. The unit comes with a shoulder strap to make it easy to carry. You also get a headset microphone, which makes the speaker ideal as a hands-free PA system. You are totally mobile with this package, so it would be an ideal tool for a tour guide to communicate with a tour group. This unit has "good times" written all over it. Features: 100 watts peak power Solar Panel allows for quick recharging anywhere you can see the sun so you're never out of power Built-in battery offers 5 hours of continual music playing or 7 hours with live micro