U Fit is a smart device with the right gears that works with a free iOS and Android app to make you more fit. This little device can help relief pains such as cervical and back pain, menstrual cramps, frozen shoulder, stiff neck. It is also a non-drug alternative for treating insomnia. Furthermore, it can also be used on bodybuilding such as burn your fat and return your 6 pack abs (Require additional accessories). You can use it as a massager for relaxation or as an acupuncture device for treatment or muscle stimulation for bodybuilding. By using different accessories together with the app on your smart phone, you can have 600+ professional programs for your different requirements. You can use it while you are doing exercise, at home, at work or whenever you want. Need to download an free app to your smart phone to work with this device.