[ HIGHTECH - MODERN DESIGN - CHIC - ELEGANT ] Simply touch the touch screen, the display in large digits indicating the temperature of the liquid contained in the bottle is very GOOD VISIBILITY. It has a MODERN, ELEGANT and REFINED DESIGN, designed for both adults and children. [ HIGH CAPACITY INSULATED HOT/COLD] This high quality stainless steel insulated bottle allows you to maintain the HEAT of the contents, above 42 for a maximum time of 6 HOURS, after which the temperature will begin to decrease slowly. Conversely, it keeps the COLD of the liquid below 10 for 5H MAXIMUM. Which is a very GOOD PERFORMANCE for a thermos bottle. Keep drinks HOT/COLD for SPORT, BEACH, TRAVEL, CAMPING, HIKING. [ LONG LIFE BATTERY - LARGE CAPACITY ] This is a premium quality Lithium BATTERY. The battery of the LED screen is of large capacity and very long lasting. The service life of this battery can reach 2 years and more. The battery is replaceable. It is an AUTOMATIC SCREEN, when not in use, the screen will automatically turn off after 3 seconds, which is good for battery saving.