[Intelligent Recognition] The bottom of the cup has a built-in wireless charging receiving module and a heating plate that can be placed on it for heating. It has two functions in one, 55℃ constant temperature coaster + 10W wireless charging.[Inductive Charging] The inductive charging distance is 8mm, after installation, the phone case can be charged normally, without removing the phone case to charge. It is recommended that the thickness of the phone case should not exceed 8mm. Please confirm whether your mobile phone supports wireless charging before use.[Safe & Practical] Intelligent temperature control sensor, with temperature control chip, overheating protection. Automatically turn off the heating equipment to prevent overcharging of the battery, intelligently identify other things to stop working, and waterproof the surface.[Widely Applicable] It can fit most cups, such as glass cups, stainless steel cups, ceramic cups, etc. For better results, we recommend using flat-bottomed glass cups or stainless steel cups. Putting a lid on the cup will also help retain heat.[Best Gift Choice] The exquisite and compact design can keep drinks warm all day long. On Valentine's Day, Thanksgiving, Christmas or any other special occasions, this is a great gift for family, lovers or friends.