Received the two BioMax900 units and stand about 10 days ago. Unpacking and setting up was fairly easy although the two units weigh at least 40 pounds so tricky to mount on the roller stand. The stand is a must although the pivot tension screw and knob are woefully inadequate to hold the heavy lights in any position and the little set screws are difficult to use so I replaced with a properly sized bolt. Only issue is you have two positions; horizontal or vertical and nothing in between. I love being able to roll the unit out to the couch or set up over a bed. The phone app is very easy to use and customize on either my, or my wife's phone. We don't need or use the voice commands. Kind of unnecessary if you ask me. The lights are powerful and warming. We are in our 60s and my wife has used a red-light mask with good results. In addition to daily hot tub, then ice bath, red light therapy is one more benefit to a healthy lifestyle.