This smart LED display lid shows the temperature inside the bottle in Celsius, so you can easily understand the internal temperature of your beverages with a simple touch. The silicone seal ring on the lid ensures great leak-proof performance, opening small hole for easy drinking, one-button operation, effectively prevents any accidental leaks or spills. It is is manufactured by superior food-grade stainless steel, odorless and eco-friendly, durable in use. It is compact and lightweight, fits most car cup holders. the frosted texture of the surface makes it easy to grip, non-slip base prevents the coffee mug from sliding or tipping over. It has double wall structure for maximum temperature retention, good insulation effect, excellent heat and cold preservation, keeps hot/ iced beverage for hours. Pour hot or iced coffee in your vacuum insulated coffee mug and feel energetic all day.