If you are looking for an affordable portable bluetooth speaker that’s fairly loud and gives you a nice level of bass, definitely check out Bolse Bluetooth speakers.
I have been using my Creative D100 for many years and it seems like Bolse Bluetooth speakers have done a fairly good job of putting nearly identical specs into much smaller package. Also, Bolse Bluetooth Speakers do have phone calling capability so you can make calls with it if you happen to receive a call while listening to music.
Overall, Bolse speakers represent a nice budget-friendly bluetooth speakers you can easily carry anywhere without taking up too much space for both your wallet and backpack.
Definitely give this guy a go if you need a portable bluetooth speakers.