A:AnswerNo strap. It is much smaller than extreme 2. Less than half the length. The next size down is very small. I looked at the extreme 2 and it looked too big to take with me on adventures.
A:AnswerThe main speakers fire in one frontal direction with the bass emanating from the sides. But that being said, the sound can easily be enjoyed from the rear side.
A:AnswerI think so. If the iPod model does not support Bluetooth you can still use the AUX connector but the AUX cable is not included so you'll have to buy it separately.
A:AnswerIts very similar actually. But the Charge 3 has a more open and better sound stage compared to the Charge 4. If you own a Charge 3 keep it. The upgrade isn't worth it at all.
