[Waterproof LED Display]: Waterproof LED display that can be completely immersed in water. Stylish mirror surface, easy to read internal liquid temperature by touching the LED screen. 360-degree rotation design ensures no water leakage and excellent sealing performance. [Long-lasting Heat Preservation and Cold Protection]: Keeps liquids above 42°C for up to 6 hours and below 10°C for up to 5 hours. After 24 hours at 100°C, the temperature remains around 40°C. [Safe, Healthy and Portable]: The 500ml bottle features a food-grade 304 stainless steel inner liner and high-quality 201 stainless steel outer shell. Durable, corrosion-resistant, safe and healthy. FDA approved and 100% BPA free. [Ultra Capacity Battery]: Built-in large-capacity lithium battery with a lifespan of up to 2 years. No need for frequent battery replacements. [Application]: Designed with advanced double-wall vacuum technology, this mug is both stylish and practical. Ideal for travel, home, office, or outdoor use. A simple and thoughtful gift for friends, family, and loved ones. Color: Blue Features: - Maintains heat above 42°C for up to 6 hours - Keeps liquids below 10°C for up to 5 hours - Waterproof LED touch screen display - Touch-sensitive screen for easy temperature reading - Eliminates the need to taste or smell to check temperature - Leak-proof and splash-proof sealed design - Secure lock to prevent accidental opening - Can be safely placed in bags or cars without leakage Package Includes: 1 x Insulated Bottle