LiberNovo Dynamic Ergonomic Desk Chair with Footrest and Extra Rechargeable Power Pack, Comfy Home Office Chair with Adaptive Lumbar Support, 160° Recline, Built-in Spine Stretch, Black, 48cm

I purchased LiberNovo Dynamic Ergonomic Desk Chair + StepSync Footrest + Extra Battery Bundle from Amazon. After the 30day return window, the chair started to make a "cracking" noise as pressure on the back rest changed. I sent a video to the manufacturer and they wanted me to take the chair apart to identify what part was making the noise. I tried to help but I am convinced the chair is very poorly designed and manufactured. It is all plastic with none of the resilience that you would expect in a $1,000 plus chair. Stick with a reputable manufacturer with history of good products and support. I am kicking myself for trusting these guys. They have no helped one little bit.