Keep your tea or coffee hot for an extra hour with the Glowstone honeycomb smart mug. It is designed to reliably keep your drinks at an optimum 140°F to 150°F and sustains this drinking temperature for an extra hour in 2 half-hour heat cycles. Once you have taken the last sip of your drink, it will shut off. This mug is made of finely crafted bone china, and it is not prone to scratches or damages like other ceramic coated mugs. The Glowstone smart mug will charge wirelessly using the included Qi charging coaster and is dishwasher safe.