It is a neat concept but, IMO, unnecessarily complicated and overpriced.
I have one of those heated coasters that let you adjust the temperature at 1/5 the cost of this. And it works with basically any mug I put on it.
Sure, I don’t get Bluetooth or iPhone connectivity but is that really worth the price? I don’t know, maybe for some.
Heated coasters generally continue to heat such that the temperature is constantly rising, cooking the coffee so that it’s burnt in short order. After a certain point the coffee can either become too hot, or undrinkable, especially if you’re unable to drink it for a while, due to work, or other distractions.
Then there’s the issue of transportability. The great advantage of this cup to me, is that I can walk around the office with it, take meetings, drop by a colleagues office, chat by the water cooler, and when I get back to my desk it’s still the perfect drinking temperature.
I can’t imagine going to a meeting carrying a mug and a heated coaster, looking for a place to plug it in, which probably means stretching a wire across the pathway to set it on the conference table. I’d look like an idiot.
Or just buy a good flask for $9.99 and keep your beverage hot all day.
Added free bonus: it can also keep a beverage cold all day.
Every time you open a thermos, it loses heat and the coffee cools off. Not to mention the coffee starts off too hot to drink, and after a period of time of repeatedly opening it to sip, the coffee drops below an acceptable drinking temperature. It also denies the drinker of inhaling the aroma with each sip, unless they remove the top, in which case all the heat convects quickly out of the container just as it does with any mug. And, when it cools off, it can’t be microwaved. There are other issues as well.
The $10 insulated mugs of which you speak are made in China with no quality control — the metals can and do contain high amounts of lead and other toxic elements which leach into hot acidic beverages. I have an insulated coffee mug which I throroughly researched, and cost me almost $200. I love it for surfing, camping and hiking, but it still suffers from all of the other issues I raised, which is why I don’t use it at the office, or around the house.