The Ionmug is a awesome product. No more cold drinks, it stays the temp u set it on for your preference. The numbers on the mug is very easy to read and it lets you know the temperature of your drink The heating can be set to 135 to 145 I love how it stays to the preference heat off of the coaster for 3 hrs. The ionmug has continued heat when the mug is replaced on the coaster so that ur beverage of choice never get cold. Very easy to clean very easy to use just plug in and adjust the setting. The mug is a great design not to big and not to small. The cup is nice especially on cold days so that u can keep your hands warm inside or out. Ionmug is not bulky so it doesn't take up very much room on ur desk or countertop. This cup is a must for all u coffee or cappuccino lovers. Great gift for teachers secretary mechanics or those stay at home busy moms