They are super! They work good for what I need them. 
Pros:
All you have to do is read the instructions and you should be done with setup in few minutes. Its 6.4 feet long .
BE NOTED that you just need a standard 2.4GHz WiFi home network to set up.
Sets up just like any other new wireless smart device in my home. After I downloaded the app and followed the instructions, it worked PERFECTLY!  Additional instructions are available when you download the app. I can personalize the color schemes to fit how I feel and even set a schedule and timer. The app also has a lot of configurable settings to customize your experience for grouping and scheduling, flashing, breathing, color shifting, etc.
Cons:
It requires a USB power source which is NOT provided.
You must be connected to a WIFI connection CAN'T USE CELLULAR! 

I absolutely love it!