Review on 👐 Cordless Handheld Back Massager 2600mAh with Heat - Effective Pain Relief for Muscles, Foot, Neck, Shoulder, Leg, and Calf - Electric Percussion Full Body Massager with 6 Speeds by Fred Khalifa

Must come with some instructions. I had to understand that you just have to pull very hard to switch heads. You don't know if they need to be rotated or what. I had to pull the end of the ball so hard I was afraid of breaking it. Very disappointed that I don't feel any heat at all. It's quite heavy and until I have it on my foot for 5 minutes. I need a message on my arm because of the weight. The second time I used it and it wouldn't start, I found that the button cover on the end of the handle [where you plug in the charger] has to be removed or it won't start. It wouldn't be that difficult to include a few simple instructions.