Bests & Worsts Reviews from Amazon

This product has design flaws and really frustrates me after 40 days of use. I picked this one due to great customer rating, now I regret I did not return it earlier as it has pass 30 days. Despite all the "cool" functions such as rotating nozzle, powerful suctions and Lithium battery, there are some headaches to deal with using this vacuum: 1. I use this vacuum mainly to clean out carpet on my car. I found out the the dirt or sand always get in the joint of pivoting nozzle. This leads to sticky joint and makes sound when I adjust nozzle angle. Dirts also by pass two filters and get in the motor. I opened the motor cover and found out the O ring is oversized. It is NOT sealing the motor from dust!!! 2. Sand always get caught and stuck on the pre-filter, I used brush to try to get it off but failed. It is just a pain to clean pre-filter. Whoever designed this, please use you BRAIN!! 3. The button that open the dust chamber gets stuck sometimes. I have to hammer it in order to get it loose. Anyways, this product is not properly engineered and does NOT last. I wish I saw all the bad reviews before buying this product. Think TWICE before placing your order. Attached photos shows the OVERSIZED O ring!