It is an interactive tumbler that tells the temperature of the drink inside.
It takes more than 15 seconds to detect the internal temperature.
Recommended capacity is 300 ml (10 oz). Up to 350 ml (11.8 oz).
Do not boil the product or use a dishwasher.
After replacing the battery, you must tighten the tumbler base firmly. If water enters through the cover, it may cause an electronic circuit breakdown.
The battery is not included.
(International shipping regulations do not allow shipping of batteries.)
Heartea Interactive Tumbler uses two AA batteries.