30$ Best selling fitness tracker on amazon or 100$ Fitbit?

In this video I have the best selling fitness tracker on Amazon, the Letscom fitness tracker. I also have my Fitbit Charge HR that still retails for around 100 dollars. Which is better? Can the 30 dollar fitness tracker beat the 100?

Here is the Letscom fitness tracker: https://amzn.to/2MHHTf0
Here is the Fitbit I used: https://amzn.to/2z52JCZ