SWISS WONDER Electric Heated Knee Pads Support for Pain Relief, 3 Temperature Control Knee Support(Black)
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1. When this pad is connected with a power source, the button will flicker quickly and then go out. 2. Next, you need to turn it on by long pressing the button for 2s. 3. It starts at preheating and reaches the peak temperature after 5 mins. 4. You can change the heat setting at any time by short pressing the button once. 5. Please long press the button for 2s to turn it off.