The upside is that I can now be on the bike and not have to worry about fiddling with my iPhone. I can take calls, turn up and down the volume, pause audio and play without taking the phone out of my pocket or a bag. While the speaker is not the last word in high volume or bass, I would not expect it to be. It is small and physics are still at work here. However, what I do expect is clear, undistorted audio and it accomplishes that goal with flying colors. I also want to mention that I had no problems connecting it via Bluetooth to my iPhone. It was immediately "discovered" and connected in seconds.
The Bluetooth speaker is also nice for just sitting on a desk. If you put it on its side, it has a very small footprint. Also, it has an aux input, so if you want to just plug an mp3 player into it via the headphone out on the player, you can play audio that way as well. It comes with a red 3.5mm cable to make that an easy process.
They also included a red USB cable for plugging it into your own USB power supply Typically, I would knock a star off of a review for not including a power plug, but in this case, I didn't. The main reason is that you can use the power supply that came with your phone to charge the speaker AND your phone. The speaker maker had enough foresight to supply an extra USB port on the speaker that you can plug your phone/mp3 player into to charge. This means you don't need two separate power sockets because one socket can effectively charge both devices.
The speaker also came with a pouch for storage which is a great idea. I plan to throw this thing in a suitcase when I go out of town and like the extra protection. All in all, this speaker performed every task I expected and threw in a couple "extras" (like the extra USB port and pouch) that made me happy about the device.