Super easy to assemble. The base box is pretty heavy so be prepared. Electronics easy to assemble as well. Pretty good massage but not SUPER strong, haven’t tried the heat yet. Pretty stiff but I like to sink down into the chair. Probably just needs to be broke in. Very well made. Got 2 for myself and son for after his heart surgery. Very happy with the buy and would buy again. Giving the 4*’s only for the stiffness and the massage not being as strong as I would typically like.