Description 3 Levels Double-Sided Heating: Hand warmers rechargeable with 3 constant level heating and temperature display. It can rapidly warm up double sides in seconds. Makes your hands feel warmer evenly! Safety Design:The rechargeable hand warmers adopts the premium chip control system to ensure the safe, which avoids overcharge, overcurrent, short circuit, over-discharge, overvoltage, and temperature protection. Complete charging protections make you and your device safer. .
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