This is one of the most powerful bluetooth speakers I have used. It is very easy to pair with your phone. Firstly, it can get really loud. Being that it has two speakers inside which face opposite directions, everyone around can hear it evenly. The sound stays crisp at maximum volume, which is amazing. The speaker has a 6000mAh battery and has a built-in USB slot for charging your phone or tablet. This feature is a great plus for a portable speaker. There is a carabiner on the speaker as well which you can clip on to your backpack. You can also put a microSD in the speaker and/or play FM radio directly on the speaker(without needing to connect a phone). My favorite feature is that it is waterproof! You can take it to the beach or kayaking or to the pool and not worry about a thing. It also comes with a bike mount for you to clip it on your bike. This too is a great addition to the speaker. While using it on the bike you can plug in the provided remote controller and use the buttons on that to control the speaker. Overall this speaker is a great one and I would recommend it to anyone who wants a powerful and waterproof speaker.