To the target group "teacher", manufacturers have certainly not intended. But the small speaker is wonderful for teaching. Instead of dragging a CD player or an iPod and speaker with electricity, I now take with only this tiny, green, slightly oversized ping pong ball. It weighs next to nothing, has a good reputation and is quite sufficient to fill a classroom. Young people are also like him because of his cool appearance, because it fits in your pocket and go dead for good amusement for guests. The battery life is quite long, it can be recharged at each PC. In short: I'm thrilled!