[High Tech-Modern Design-Chic-Elegant] Just touch the touch screen, the large digital display indicates the temperature of the liquid in the bottle, the visibility is very good. It has a modern, elegant and sophisticated design, designed for adults andchildren. [HIGH CAPACITY INSULATED HEAT/COLD] This high quality stainless steel insulated bottle allows you to keep the heat of the contents above 42 degrees for up to 6 hours, after which the temperature will start to drop slowly. Instead, it keeps the COLD ofthe liquid below 10 5H MAXIMUM. This is a very good performance for a thermos bottle. Keep drinks hot/cold for sports, beach, travel, camping, hiking. [Long Life Battery - Large Capacity] This is a high quality lithium battery. The battery capacity of the LED screen is large and the battery life is long. The battery life can reach more than 2 years. The battery is replaceable. This is an automatic screen,when not in use, the screen will automatically turn off after 3 seconds, which is good for power saving. Capacity 320ml