Adjustable Temperature able Electric ing Shoulder Strap The product is shipped based on the color or size of the main image of the product page. USB input voltage: 5V / Adapter input voltage: 7.9V / AC temperature: the third gear ( light) USB temperature is about 38;The temperature of the third gear ( light) adapter is 40-45;The second gear (white light) USB temperature is about 41;The second gear (white light) adapter temperature is 46-55; gear (red light) USB temperature is about 45;The temperature of the first gear (red light) adapter is 56-65C.Lamp temperature: white light: temperature range 40/104 to 50/122Blue light: temperature range 50/ 122 to 60/ 140Red light: temperature range 60/ 140 to 70/ 158Note: Different measuring instruments and measuring positions will have an error of 2-4C Product size: USB/OP bag 24*15*4cm 0.25kgAdapter/OPP bag: 24*15*4cm 0.35kgPacking size: 51*44*42cm 16.7kg 42pcsPacking list: shoulder strap*1, extension strap*1, usb charging cable*1, adapter*1 (optional), manual*1, OPP bag*1 :The built-in hot pad can warm the shoulders, promote circulation, and relieve shoulder pain and pains. It can also help relax the shoulder muscles.The two-way high-quality plastic ring design can be used for two-way adjustment of the left and right shoulders of men and women. The extended belt fits bust sizes from 27 to 55, and arm sizes from 9 to 16. Mesh bag size: 5''*7.5''Comfortable and wear-resistant-2 meter charging cable can minimize the range of motion restrictions. able and lightweight neoprene relieves discomfort. Temperature regulation provides warmth, but still allows air to circulate.The shoulder rest can also be used as a compression shoulder rest. wear it at high temperatures for more than 5 minutes to avoid burns. It is recommended to use a medium temperature (white light).