Product Parameters USB input voltage: 5V / DC Adapter input voltage: 7.9V / AC Gear temperature:The USB temperature of the third gear (blue light) is about 38℃; The adapter temperature of the third gear (blue light) is 40-45 ℃; Second gear (white light) USB temperature is about 41 ℃; Second gear (white light) adapter temperature 46-55 ℃; First gear (RED LIGHT) USB temperature is about 45℃; The adapter temperature of the first gear (red light) is 56-65 ℃. Light temperature:White light: Temperature range 40 ℃/ 104 ℃ to 50 ℃/ 122 ℃ Blue light: Temperature range 50 ℃/ 122 ℃ to 60 ℃/ 140 ℃ Red light: Temperature range 60 ℃/ 140 ℃ to 70 ℃/ 158 ℃ Note: different measuring instruments and measuring positions will have an error of 2-4 ℃ Product Size: USB/OP bag 24*15 * 4cm 0.25kg Adapter/OP bag 24*15 * 4cm kg       Packing size:51*44*42cm   16.7kg    42pcs  Product features: Built-in heating pad can warm your shoulders, promote blood circulation, and relieve pain such as shoulder soreness. It can also help relax shoulder muscles and speed up the healing time. Two-way high quality plastic loop design, which can be used for two-way adjustment of the left and right shoulders of men and women. Extended belt fits bust size from 27 to 55 and arm size from 9 to 16. Net pocket size: 5 ''* 7.5'' Comfortable and wear-resistant-2 M charging cable can minimize the range of activities. Breathable and lightweight neoprene relieves discomfort. Temperature regulation provides warmth, but still allows air circulation. Shoulder support can also be used as a oppression shoulder support. Do not wear it under high temperature for more than 5 minutes to avoid burns. Medium temperature (white light) is recommended. Package containing parts Shoulder shield * 1 Adapter * 1