So far this circular polarizer works with excellent results.

Recently received and set up camera. The case feels solid (I mostly use these underwater) Optical clarity of the lenses looks great. The initial setup tutorial on the touch screen is just the right length and very helpful. TBD how the video processing quality is but good marks for manufacturing and user interface.

Has every attachment you will need for an action camera

If you're not used to wearing an ear-bud style headset, you may experience mild discomfort at first but, for me, I found it to be comfortable. Remember: this is for one ear - not two.I liked that I was able to simultaneously setup my laptop and phone with the device.The device worked very well; I was able to make and take calls right away, listen to music, and be heard clearly.This is especially handy off hours for me as I am recovering from a surgery and can't always hold up or prop up my phone to my ear so I leave it in my carrying pouch.

Great alternative to a GoPro, it's got tons of features like touch screen and wifi functionality. You are getting way more than what you are paying for.Video quality is excellent, sound is great, and I've been using it for a few months now with no issues.