Features 1.500ML Smart LED temperature display 304 Stainless steel vacuum flask with eco friendly design. 2. Safe, BPA-free and eco-friendly, no smell and easy to clean. 3. Ouble layer stainless steel and high tech vacuum heat insulation layer in the middle. It can keep hot or cold water for 12 hours. 4. Portable and durable. Ideal for travel, outdoor activities, car, office, home, school, picnic, hot yoga, hiking, camping etc. 5. With HD LCD touch screen for prompt real-time water temperature display. Let you drink the water that is most suitable for temperature anytime, anywhere. 6. This vacuum flask water bottle is also a good container for coffee, Juicer, milk, beer, drinks and daily hydration. Best Gift for family and friends.