iDance Groove214 Bluetooth Trolley Speaker: What is it? A freestanding, portable trolley speaker with a wired microphone, 100 watts woofer system and both wireless bluetooth and USB MP3 playback. About the product If you\'re planning a party or live music event, you need this speaker. Play wirelessly through a bluetooth connection or plug in your MP3 USB. Housed in a strong ABS cabinet with a telescopic handle and wheels, it also features a wired microphone, an impressive 100 watts woofer system and mixer integrated with mic/ guitar / aux in inputs. It\'s so easy to use and you can take it anywhere. How is it powered? With 2 x rechargeable batteries (included) that last 2-4 hours. Why you should buy it Perfect for parties - both inside and outside! Shop it now! | iDance Groove214 Portable Bluetooth Trolley Speaker