Display Temperature & Waterproof LED displayStylish mirror, by touching the LED screen, to easily know the inside temperature of the travel mug lid. Tips:1. Protect the travel mug lid and not to fall, it is easy broken. 2. Wipe or rinse the lid when cleaning, NOT SOAK IT IN WATER .each time pressed the bottle cap , the temperature is displayed for 3-4 seconds, and then enters the invisible power saving mode. The next touch will display the temperature again.Leakproof Coffee Travel Mug & Keep Hot Or ColdThis travel mug leakproof is very good, so no warry leakproof when you take it in your bag/backpack or hand hold walking.The vacuum of cups and cups can block heat transfer. Our products hold liquid heat above 42 C for up to 6 hours and liquid cooling below 10 C for up to 5 hours. This is longer than other vacuum bottles. (After 24 hours at 100 C water, the temperature is maintained at about 40 C).Large Capacity BatteryThis insulated coffee mug have lithium battery with large capacity, automatic screen when not in use, Can reach 2 years battery life, do not worry about cumbersome battery replacement. If the travel mug lid not working, please contact us in time through your order. We will replace the new cap for you in free. Please give us the opportunity to slove your problem!!Widely Use & Great GiftUsing state-of-the-art double-wall vacuum technology, this travel coffee mugs is stylish and full-bodied. Whether you are traveling, at home, in the office or outdoors - the ideal companion. Simple and practical, it is the best Birthday Christmas gift for friends, family, children, sons and daughters.(After 24 hours in water at 100 C, the temperature is maintained at about 40 C)-304 stainless steel, safe and BPA free1 PC Insulation bottleColour: black, gold, pink, silver, red, white1. Internal 304 stainless steel(After 24 hours in water at 100 C, the temperature is maintained at about 40 C)- 12 hours of hot or cold water- Stylish mirror, by touching the LED screen, the internal temperature of the liquid is easy to understand.-With LCD display to prompt real-time water temperature by contactOur products maintain liquid heating above 42 C for 6 hours and liquids below 10 C for 5 hours. This is longer than other vacuum bottles.2. External 201 stainless steel- Long-lasting insulation: The vacuum of the cup will hinder heat transfer.Battery capacity: 1100mA (can be used for 6 months, the battery cannot be replaced)- Suitable for easy travel, suitable for outdoor sports, office, beach, school, picnic, hot yoga, hiking, camping, cycling, running, walking, gym, fitness, etc.Size: 22.56.56.5cmCapacity: 480MLYou don't have to use your mouth to test the temperature and avoid burns. 360 degree rotation does not need to worry about water leakage, and the sealing is good.