If you feel the need to get yourself on board with a decent quality, portable speaker, take a look at this rectangular tube speaker by Intempo!
The Intempo Tube Speaker is portable, has a hardy construction and most importantly, it sounds great. The sound is big for a speaker of itssize and you get a lot of sound out of it (total 11 W). The quality of the audio produced is balanced nicely so the audio is clear and bassy without sounding muddy.
For situations where a smartphone speaker isn't enough, a portable Bluetooth speaker like the Intempo Tube Speaker is great, especially when you can carry it around (literary) on your shoulder thanks to a strap (which is included).
The Intempo Tube Speaker is fitted with a 3.7 V 1200MAh li-ion battery, making the unit rechargeable via micro USB cable (also included).
Full charge takes around 3 hours and while charging the LED indicator will show red. Once full charge has taken place, the red LED will turn off.
As far as operating the Intempo Tube Speaker, the unit is powered ON/OFF by flicking a switch left (OFF position) and right (ON position).
There are a total of four buttons on the Intempo Tube Speaker that allow you to skip tracks, adjust volume, PLAY/PAUSE and changing between Bluetooth Mode and AUX mode. The SKIP track buttons double up as the volume buttons. Simply press and hold the buttons to turn up or turn down the volume. Skipping tracks is done via short presses.
AUX mode works simply by using  a male 3.5 mm to male 3.5 mm cable (included) and connecting one end to your smartphone, tablet or other audio source with a 3.5 mm audio socket. Bluetooth Mode works by flicking the ON/OFF switch to the ON position and pairing it with your smart device. When in pairing mode, the LED will flash blue and red simultaneously.