Overview: 100% new design and high quality Intelligent Recognition: The bottom of the cup has built-in wireless charging receiving module and heating plate, which can be placed on for heating. Plugging in and put on the cup, there is on a green light, keep your beverage at 55 degC Wireless Phone Charger: Fast Charging and wide compatibility, The wireless charger is for mobile phones that can be wirelessly charged. Super safe: Intelligent temperature,e control sensor, with temperature control chip, overheating protection. Auto-shutoff heating, protect the battery from overcharging, Intelligent identification of other things to stopping work, waterproof surface. Use suitable mugs: It can be fit most cups, such as glass cups, stainless steel cups, Ceramic cups,s, etc. for better results, we recommend using a flat bottom glass cup or stainless steel cup. Placing a lid over the mug will also help retain heat. Best Gift Choice: Beautiful and compact design, keep the beverages warm all day.it a great gift for your family, lover, or friends on Valentine's Day, Thanksgiving, Christmas, or other special occasions. Specification: Product name: wireless charger & constant temperature coaster Wireless distance: 5mm Input: 5V/2A Output: 5W Constant temperature: 50℃ Material quality: PC stainless steel mirror Packing size: 23.5*11.6*2.3cm Product size: 17.5*9.5*1.3mm Note: Contains usb line Package Content: Coaster*1