This awesome looking Iron Man helmet is actually a bluetooth speaker.
You can stream music to it wirelessly via bluetooth or you can connect either a USB flash drive or a 3.5mm audio cable. The mark XLIII can put out 15W RMS + 3W RMS x 2. It weighs about 3.5 lbs and it comes with a power adapter and a 3.5 mm audio cable to get you started. The coolest part of the helmet is that the eyes glow when you have it on to give you the feel that iron man is there watching you while you're playing music.