... convenience,safe,gift 3.7 hours warming,durable Name:New Art of MIMI Hand WarmerFeatures:1.USB head charger,high applicant,public ... 19mm, Product appearance design with heart-shaped, more close to life, it is best gift product. According to the design and ... LED lights that working conditions, arbitrary set appropriate temperature.Warranty:the electronic part of this product was guaranteed for one year ...