The portability depends on the weight, size, use of batteries, presence of wheels, and other factors. Most Bluetooth speakers are usually portable. This is because they are smaller in size even though they have good wattage. The louder and powerful speakers are usually not portable. They do not fit in your pocket or purse easily. It is harder to move them around from one place to another. Loudspeakers with high sound power are also heavier than those with low sound power. This makes them less portable and hence makes you use them at home most of the time instead of carrying them along when traveling or going out on trips with friends and family members.