1pc ThermaKnee USB Heated Knee Brace with Vibration, 3 Heat Settings, 3 Massage Modes, Timer Function, Non-Battery Operated, Ideal Gift for Parents and Personal Use

Power supply not included can not store electricity! Mobile or outdoor use requires you to provide your own mobile power, power outages cann't generate heat! Please use 5V 2A voltage, prohibit the use of high-power adapters,will burn the product! Use of 5V 1A voltage only produces low range temperatures! Please do not turn on the current in the case of non-use to avoid empty firing and damage to the product! Note: When using, need someone to watch, when not in use, unplug the power, do not cove