Up to 10 hours of heating with upgraded 3000mAh battery for extended warmth. Heated insoles can be recharged up to 500 times and perform safely in temperatures as low as -20°C. 5-second rapid heating powered by fifth-generation chip technology. Features soft velvet upper and advanced carbon fiber heating material. Ideal for outdoor activities such as motorcycling, skiing, fishing, travel, and camping. Three adjustable temperature settings (Low, Medium, High) controlled via remote. Temperature range from 104°F (40°C) to 149°F (65°C). Approximate runtime: high heat (4 hours), medium heat (6 hours), low heat (10 hours), depending on environmental conditions. Built-in safety protection system includes temperature sensor and control chip that automatically regulates heat to prevent overheating. Circuitry and battery enclosed in a protective plastic casing, designed to support up to 200kg. Trim-to-fit design allows customization to your shoe size. Follow the included sizing guide to adjust the insoles for a comfortable fit. Includes a 2-in-1 Type-C cable for charging the insoles. The cable can also be used to charge compatible electronic devices such as smartphones and tablets.