Features:  Food Grade Material: Made of food grade 304 stainless steel, safe to use. 300ml volume lightweight, easy to carry.  Smart Temperature Display: When your finger touch the cover and the will display the internal temperature. So smart design, no need to pass the mouth to test the temperature and avoid burns.  Easy To Clean: Waterproof design, which is convenient for washing, just wash the bottle in water.  Long Time Keep Warm & Cold: Nearly 12 hours to keep water warm and cold This smart water cup suitable for both winter and summer, broke the traditional style of Vacuum cup   A Variety of Occasions: Energy saving and environmental protection Suitable for easy travel, ideal for outdoor sports, office, beach, school, picnic, yoga, hiking, cycling, running, fitness and more for all occasions of cold or hot drinks.    Specification:  Colors: Black, White;  Material: 304 Stainless Steel+PP+Silica gel+High Borosilicate Glass;  Capacity: 300ml;  Size: about 22.5cm/8.86"x6.5cm/2.56";  Conversion: 1cm=0.3937 inch, 1inch=2.54 cm];  Battery: Built-in Chip Battery(Smart Temperature Display);  No need to replace the battery: built-in high-performance battery, with low-power chip, intelligent temperature control technology automatically cut off when not in use.    Package Included:  1 x Smart Insulated Water Bottle;