Delivery was on one of the dates promised, though one of the two boxes was severely damaged and poorly repaired (see photo). Luckily there was insignificant damage to the chair.  Assembly instructions were adequate, though barely so.  Once the chair was assembled and powered up, we found it to be comfortable and the recline and lift functions to work well.  However, the massage/vibration function is grossly inadequate.  The vibration in the lumbar and upper back areas is nearly undetectable, and the vibration in the lower part of the chair is noticeable but weak.  Very disappointing.