 This is the Knee Flow Massager. This is a great device for those that suffer from knee pain or just have injuries from playing sports if you're an athlete or you go to the gym quite a lot and do heavy weightlifting or even if you have some arthritis. This is great to massage your knee and alleviate some of that pain and get you up and walking very quickly. It has some pads and an infrared and vibrator inside. You press the button once, hold down, it turns on and it starts straight away. You can set between recovery, repair and relaxation mode. You can go to low, medium and high temperatures and low, medium and high pressures. Timed at 15 minutes maximum after which point it will turn off. You've got the battery indicator there and all you need to do is just relax and it is doing its job calming my knee pain down and feeling really good at the same time. Check out my full review on my YouTube channel and make sure to like and follow for more gadgets.