Functions and Features 1. Unique and advanced technologies Constant temperature and lasting heating are available through high-tech heating materials. 2. Low energy consumption, lasting heating and low cost Adopting the safe and reliable high-energy polymer batteries and the high-tech heating materials which feature low energy consumption and lasting heating, the product can heat at a designated temperature for 6-8 hours after fully charged. 3. Adopting far-infrared heating technology The product produces far-infrared to the acupuncture points on feet for massage and improving blood circulation while heating. 4.Absolutely heating safely The working voltage is 3.7v,and it is moisture proof and corrosion proof in order to guarantee customers safety. 5. Easy operation The product has a charging socket and a switch exteriorly. When heating is needed, turn it on; or turn it off to save energy. After the batteries run out of power, the product can be charged easily. 6. High quality and stylish design The product is designed by a famous Italian designer, and is manufactured with high-quality materials and with internationally-advanced Italian production equipment. 7. Strict technical standards The product is delivered only after all of its technical specifications have passed the inspection of the QC Dept., and each product is attached with a Certificate of Quality. Components 1. Control pack including the socket of charging and discharging,indicator light of power supply and switch 2. Shoes body 3. Battery 4. Charger 5. Heating sock lining Technical Data 1. Charger:220v charging 2. The highest temperature:40-50°C 3. Warm up time:3-5 minutes 4. Heating period:6-8 hours 5. Charging electricity time for polymer battery:5 hours 6. Using environment:-30-90 degree 7. Charging and discharging frequency of battery:over 500 times 8. Capacity of battery:3600mah