The ultimate mug that keeps your drink at the ideal temperature for an extra 30 minutes per use. Glowstone has been made from fine bone china and is completely automatic and dishwasher proof. It combines the latest technology with the finest materials to make every mouthful of coffee and tea deliciously hot. This is not a just a mug to keep your drink hot. This will make your coffee and tea taste better. You will never want to use your old mug again. The Glowstone mug is fully automatic. There are no buttons or controls. The mug turns on when it detects a hot drink, lights up when the perfect temperature is reached and turns off when you take your last sip, or after 30 minutes The Glowstone mug looks to give you the perfect mug of tea and coffee, without any compromise or intrusion. It has been designed for use with all popular coffee machines.