Product Features Display Previous page Next page Operation Steps & Precautions Previous page Next page Works Better with Gel Used Anytime & Anywhere Why I already fully charged , it still couldn't turn on? Before use, make sure the device has sufficient power, then unplug the charging cable, otherwise the device can't turn on successfully. Does this body massager have a heating function? Yes, there is a heating function. Thermostatic heating 37-42℃ (98.6℉-107.6℉) makes your body feel more comfortable during application and the massage gel to be better absorbed for better results. Why does it turn off after 15 minutes? This device will automatically turn off for every 15 minutes because we recommend using each body part for 15 minutes at a time,then switch toother body parts, you could furn on again to continute. Is it essential to apply the gel before use? Yes. The massager is mainly to generate micro-current effect on the skin, dry skin is not conductive, use no effect. Does this massager vibrate? Does not vibrate, this massager mainly works on the skin through microcurrent.