This Vidonn x6 has exceeded my expectations. I thought it would be cheap and broken and that the app would suck. I like the app better than up band app which I used for a year on my note 3. It isn't as pretty but way more functional. I love the band. It feels like a minimalist smart watch. And I paid 30 bucks. Just wish I could speak into it and that it had an interactive holographic features so I could leave my phone at home!