Min Ya Temperature Control Smart Mug, 400ml (13.5 oz), 3-Mode RGB LED Display, Auto Heating Coffee Mug for Office/Home Desktops, Black [Keeps Your Drink at the Ideal Temperature] Enjoy your drink at your preferred temperature down to the last sip with the Min Ya Smart Mug, which keeps your beverage at an ideal 55°C for hours. [Smart LED Light Display] Features a 360° light system. Blue indicates heating, RGB indicates maintaining 55°C, and a flashing red light serves as a reminder to prevent forgetting your drink. It ensures your drink is kept at the ideal temperature. [Safe Auto Power-Off Function] When the mug is left unused for 4 hours, the smart sensor detects this and automatically turns off the power. It's safe even if you leave a hot mug unattended for a long time. [Spill-Proof Lid and Lightweight Design] Comes with a spill-proof lid that keeps your drink at the perfect temperature while preventing spills. When empty, it weighs only 200g (excluding the battery), making it ideal as a portable heated coffee mug. 82