USB powered convenience: Easy to turn on and operate from any USB source. It can be connected to home USB outlets, car USB ports, power banks, or computers, enabling use almost anywhere. Aviation aluminum liner for temperature stability and safety: Built with an aviation aluminum liner that helps lock in temperature and regulate warmth. Anodizing provides added protection for contents, supporting drug safety and overall storage security. Semiconductor refrigeration with intelligent control: Solid state cooling delivers strong, rapid cooling. An intelligent temperature control chip maintains precise cooling from 0 to 18 degrees Celsius. Small size with large capacity: Compact cylindrical design that maximizes interior space. Easy to carry on long journeys while still offering substantial storage for your needs. Use scenarios Road trips and travel: Keep medications, snacks, or beverages cool during long drives without relying on mains power. Office and commuting: Use at work or on the go with a USB power source to maintain a stable temperature for essential items. Outdoor activities: Bring along on camping or day trips to protect perishable items in environments where traditional coolers aren't practical.