Jia Kang (JK) 60 All Steel Vacuum Vehicle Kettle, a high-capacity insulated flask designed for long-term temperature retention.Key Specifications & PerformanceCapacity: 4000ml (4 Liters).Temperature Retention: Features "JK 60" technology, designed to keep beverages hot for up to 60 hours and cold for up to 72 hours.Material: Constructed from premium 304 stainless steel (SUS 304) with double-wall vacuum insulation.