30% larger heating areas: it has 30% larger heating panels compared to others on the market. Ultra thin carbon fiber heat elements that generate heat on the left and right shoulders, the back and the left and right bust to heat the body core. It has 3 heating settings (high, medium, low) with just press the button. Rapid and durable warming: Fast heating in seconds with a certified battery of 7.4 V 5000 milliampires. It works up to 8-9 hours (low), 5-6 hours (average), 3-3.5 hours (high), with a single charge, up to 9 hours of operating time. Quick phone charge: charge your phone and smart devices from the USB port of the Venustas battery. It is machine washable: suitable for washing machine and dryer.