Electric Knee Support with 3 Level Temperature Adjustment

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<div class="detailmodule_text">Heat setting temperature parameters for reference:<div class="detailmodule_text">When use the USB cable to plug in an USB port of desktop computer to get source, the output is about 5V/DC: Highest (red): the temp is 111.2℉/44℃, hot, for long time use. Medium (white): the temp is 105.8℉/41℃, warm, for long time use. Lowest (blue): the temp is 100.4℉/38℃, lukewarm, no need to use this setting. PS: if you connect it to a power bank with an output current higher than 500mA, the temp can be higher than the above measurements, and you can get more heat. </div></div><div class="detailmodule_text">Instructions:1. Please long press the switch for 3 seconds to start power. 2. This product will work normally when the plug is plugged in, and the red light, white light, blue light goes out after 0.5 seconds without pressing the switch. 3. This product is fully heated when the light turns red in breathing pattern (it is not always bright, it is shown as flickering). 4. This product will be automatically transferred to 70% heating if you do not press the switch, and the light will turn white after 5 minutes. 5. Once pressing the switch, it will be transferred to 45% heating, and the light turn blue. 6. This product will be off after long press the switch for 3 seconds.</div>