Characteristic : 1 Fast heating, 5 minutes to 40°C, after reaching 40°C the heating will stop. 2 Easy to charge, you can charge it in your computer, power bank. This is a portable heater that is very convenient to carry outdoors. 3 Built-in heating copper sheet, many copper sheets are thick, can heat up quickly and then keep at about 40°C. 4 100% waterproof, Material: ABS color white Size: 136x20mm
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