Customers are mixed about the performance of the mp3 player. Some mention that it works very well for running, biking, and kayaking, while others say that it doesn't work that well when trying to update the app, the clip works really well, and is an excellent product. However, some customers also mention that the app is poor quality and the device just refused to work once they got where they were going.

Customers are mixed about the ease of use of the mp3 player. Some mention that it's an easy-to-use daily MP3 player-simple design, and the user-friendly interface makes navigation a breeze. However, others say that it is slow and finicky and just wasn't a streamline experience at all. The user interface is not very obvious, but still functional once you get used to it. The device itself is extremely difficult to setup and the app is complex and non-intuitive.

Customers are mixed about the sound quality of the mp3 player. Some mention that it works fine with zero dropouts from sound, and has the choice of music quality. They say it's a powerful music player that enhances the way they listen to music. However, others say that the sound is not as good as the iPod Shuffle, and there are occasional audio peaks in some songs. They also say that it'll be very quiet and does not provide a volume that could compare to 1990s Walkmans.

Customers are mixed about the music streaming. Some mention it's good to be able to play Amazon music playlist on the go without having to carry a phone. They also love that you can download music to it and use it off-line. However, some say that new music doesn't load on it, it'll die in a few months, and that it doesn''t include Amazon music podcasts.

Customers have issues with the connectivity of the mp3 player. They mention that the syncing process stops when their phone's screen goes off, the connection is sometimes lost, and the sync time is rather slow. They also have issues connecting their bluetooth and the sound quality suffered when they were running. It can be slow to turn on and connect, and there are quirks to getting the thing connected and sying music to it. Some of their songs were unable to sync from Spotify and the mighty vibe does not stream Spotify from wifi, which would defeat the purpose of owning.

Customers are dissatisfied with the value of the mp3 player. They mention that it's not worth the price, frustrating, and a waste of money. They also say that the instructions are minimal and useless. Some customers also say it'll be back to their old device.

Customers are dissatisfied with the battery life of the mp3 player. They mention that the battery doesn't last as long as they say, the Bluetooth seems to drain the battery pretty quickly, and the problems revolve around battery management. Some say that the device stopped charging after only a few months and started to randomly shut off during a run.

Customers are dissatisfied with the quality of the mp3 player. They mention that it is glitchy, gets buggy very quickly, and stops working. They also say that it has some annoying quirks and the vibe regularly drops out. Some say that the low end response is inadequate.