First of all, consider where you intend to use it, can not generally consider that outdoor use, outdoor riding speakers and general morning exercise speakers certainly different, no product can world.
Second, the portable Bluetooth stereo should consider the playback length. Out of the house, although it is not possible to charge a full 24 hours of the opportunity, but a big day out is very likely, if the speaker suddenly no electricity, then what to do.
Third, bump question. Outdoor use, the inevitable, portable Bluetooth speakers If you touch a few of the bad that's not good.