Lo utilice unas 5 veces y después dejo de funcionar.Lamento esto porque ya se cerro la ventana de poder regresarlo.

Lo compré para regalo.....me comentan está bonito y eficiente.

Excellent product, does what it says.

Funciona muy bien, me encanta la pantalla digital y aunque dice que no sirve para tazas que no son planas de la base, si las mantiene caliente también.

No me gustó la calidad del teflón que traé, es de muy baja calidad, sólo he puesto mi taza sobre la cubierta de teflón y ya se está desprendiendo parte del teflón.

Opened in great condition, no issues.Read the instructions, twice, as there are some quirky operating aspects with this unit. Its not intuitive.I fully tested all the features, and they all work correctly in accordance with the instructions.It works perfectly as per the manual. Such as, you have to have enough weight on the heating pad to make the unit work at all or to even just adjust the temperatures up or down. The cup has to be heavy enough to operate the controls. If your cup gets too light in weight as you drink, and the cup with contents weight drops below the minimum weight, the unit will stop heating.I use it for keeping my butter soft in winter. My butter dish weighs more than the minimum, so the unit will operate even if empty.Its the only unit I could find that was this small, therefore has the lowest electricity usage, therefore the lowest long term operating cost. Its the only one with a low operating temperature that you can set by 1 degree from 25C-90C. It specifically starts to operate at 25C up to almost boiling. Butter is soft at 25-29C, and starts to melt at 30-32C. If you have a small amount of butter (mass), then I can set it at 25C and the butter is soft, but not mushy, or melted. But if you add butter, 1 cup, then I need to increase the indicated temperature to 29C. to compensate for the increase of mass. It takes about 15-30 minutes to get fully soft from a cold start at 18C (morning house temperature) and it has to heat up the butter dish and ceramic top. Works perfectly. I get up in the morning to let the dog out, I turn the unit on by touching the red button on the way by to the door. Look after the dog, start coffee, start breakfast, butter is now soft enough by the time the toast pops. Perfect. Shuts off around 2pm 8 hours later. Need to turn it back on when I start working on supper. Its ready to go when I need it, soft spreadable butter. Shuts off automatically again in 8 hrs if I forget to turn it myself. If I don't use it during the weekend, its off automatically saving electricity. Perfect. Almost all the complaints I have read about this unit is due to folks not reading the instructions or following the instructions properly that they have read.I also plan to use it for keeping my bread dough bowl warm during the rise. Set for 30C. Heat my ceramic bowl with hot water, dry, grease/butter the inside, then place it on the COSORI heat element at 30C. Drop my dough into the bowl to rise. The bowl bottom matches the same size as the COSORI heat element face. Perfect.I also liked that the cord was not a full 110V cord, but a 12V cord coming from a transformer unit that I plug into the top of my stove. The wire easily tucks behind the unit , down the wall behind the stove, almost invisible while the unit is on the kitchen counter beside the toaster. If I want to unplug it, the 12v plug comes out of the back like a laptop. Wash it, clean it, wipe it easily with no cord, then plug it back in at the toaster where it sits. Perfect.I can't believe they don't market it just for this purpose. In Canada this is almost always an issue, hard butter in winter. I now don't have to wait until summer or travel south of Mobile, Alabama to have soft butter for breakfast.

I bought the gravity induction version, so some of my comments apply to the gravity induction feature.I was initially confused when the item didn't turn on when I pushed the power button. Try putting a cup of coffee, tea, or soup on the heater before you push the power button. If that doesn't work make sure the heater isn't sitting on a cord or other item and is on a flat surface. This cup warmer will not turn on if there is no cup on the heating plate. Several times now the unit refused to turn on when there was a cup of coffee on the heater. In every case a power cord had worked its way under the unit, and it worked when the cord was removed. Check for that sort of thing if your warmer doesn't turn on.You can select from a large range of temperatures. Very nice.It seems the industry is using the term "gravity induction" for these items. This seems dishonest to me. It may be technically correct, but I have an induction stove, and associate the term induction with that type of technology. To me it implies you are getting some remarkable technology that you are not getting. When used for these devices it means it has a weight activated switch.When you lift the cup off of the heater the lights start blinking. It does not actually turn off immediately. When you put the cup back on the device the lights will stop blinking and heating is resumed. It will turn off if the cup is removed for a long period of time. I have not found that this is a problem.I will say that I see no purpose in the "gravity induction" feature if you can remember to turn the unit off when you are done with it; it will only be a source of problems. I don't believe it turns the heater off when you remove the cup and turns the unit on again when the cup is replaced. I believe it only turns the unit off if the cup is removed for a longer period of time. You don't really want the heater to be turned off when the cup is temporarily removed. The heater is a very low powered one. It is powered by USB after all. When the unit is first turned on you can watch the heat slowly climb up to the temperature you set.I have found two brands of cups that work well with the Cosori beverage warmer. There are advantages and disadvantages with both.The Cosori stainless steel cups are well made and look nice. I use coffee creamer and do not fill the cup clear to the top. The cup rim has not burned my lips. I believe these should be dishwasher safe. But the coffee cools very quickly when not on the warmer. I drink half a cup at a table with no warmer before going to a place where I have access to a warmer. So I consider this to be a problem. The Cosori will warm a cold cup of coffee however. The Cosori cup is a light cup and the unit will not turn on if there is only a little coffee in the cup. The gravity switch is on the bottom of the unit toward the back, so moving the cup toward the back of the heating plate helps a little.The Howay cups are a flat bottomed ceramic cup with a steel plate on the bottom. Your beverage will stay warm much longer in this cup. It is made for coffee warmers. It does have a wood handle, so I wouldn't put it in the dishwasher. Because of my habits the Howay cups work better for me. These cups are heavy enough to activate the unit when there is no coffee in the cup.Heating efficiency of these units depends on the design of the cups used. The Howay cups need a higher heater temperature than the Cosori cups to achieve the same coffee temperature. Mixing cup types means you would have to keep changing the heater temperature to achieve the beverage temperature you want. I would recommend selecting one cup type and sticking with that.

A mi me gusta que el café esté muy caliente, por eso compré este aparato, sin embargo, aunque mantiene los líquidos calientes, no es como a mi me gusta, la desventaja es que no encontré una taza de fondo plano como lo indica el aparato, así que deberían incluirla. Lo incómodo es que debes tenerlo conectado a la corriente eléctrica y eso lo hace poco funcional por el cable, ya que debe estar sobre el escritorio.

Para mi de maravilla, pongo mi chemex o la jarra de la V60 sobre ella y mantiene 600ml de café a una temperatura de entre 55 y 60 grados sin problema y voy sirviendome pequeñas tazas cada que se me antoja manteniendo el café a esa temperatura estable por horas, podrían mejorar el diseño o hacerla algo más potente para mantener temperaturas mayores, pero entiendo que puede ser peligroso para la superficies y podría causar accidentes, así que cómo funciona está perfecto

Estoy muy contento porque este dispositivo realmente mantiene muy caliente la taza de mi café; pero es importante comprar también las tazas metálicas de superficie plana de esta misma marca. Por que las tasas de cerámica no son buenas conductoras de calor. Ademas el producto es de excelente calidad.

I sip my coffee slowly taking an hour to drink a cup, this device keeps my coffee nice and warm/hot. The temp can be adjusted to precisely my desire, which is 190F for me.

El producto se ve muy bien fabricado, con materiales de calidad y el uso es muy fácil. Tarda un par de minutos en llegar a la temperatura deseada y realmente funciona con cualquier taza de vidrio, cerámica, metal o lo que permita la conducción del calor.

Yes, you are going to pay a bit more. For me, so far, it is worth the extra cost. I have only had the unit for about 10 days, so will have to see what kind of longevity it has. There is almost nothing to not like about this unit. It has a nice heft to it with a brushed chrome metal case. Cannot tell if the bottom is metal (black) but it looks like it. The bottom is well ventilated with holes and sits off the surface to allow air flow. Others I've had were plastic except for the heater. Others have eventually burned out. The last one I had burned out after I accidentally placed a package of buns on it while it was still on. The plastic on the buns and most of the heater case melted severely so I felt pretty lucky I didn't start a fire. With a metal case that should be less of a problem. I LOVE the controls. The digital temp display and the temp up/down arrow controls are cool but not particularly useful. It doesn't take very long to hit it's max temp of 230 F; you can watch it happen. The touch controls (not buttons or something you press) are nicely modern. The on/off button is right there in front. Other units I've owned, had a slider on/off, on the back that took some effort to slide. So far, I could not be more pleased and would highly recommend. Two very minor complaints: I wish the heating plate was slightly recessed. I am used to using my cup, on the plate, closer to me. Now the cup just slides off if I pull it. My biggest complaint is that the on/off symbol is white when the unit is on and RED when off. Red does not mean off to me. My glass stove has an indicator on the control panel that is lit RED when an element is still hot; i.e., red means danger. My preference would be that the control panel not be lit at all when the unit is off. I would like there to be an over temp shut off, and maybe there is, but I just don't know.UPDATE: I went back and read other reviews. Two things others have mentioned are worth of note. First, the whole case around the hotplate does get very hot.(not the controls which seem to be embedded in glass). Since I never have had a reason to touch these areas, I had not noticed. As mentioned, this probably means that the stuff inside the unit is also getting very hot. Whether this will impact longevity remains to be seen. Secondly, I decided to check the temperature of the table surface under the unit after it has been operating for a while. As I said initially, the bottom of the unit is very well ventalated with holes and the unit sits about 3/16ths of an inch above the table on rubber feet. It turns out that the table surface under the unit does get quite warm. Not so you could not leave your hand on it but just hot enough to make you wonder what kind of damage could be done over time. So far there is no evident change in my wood table's surface, but I am considering finding some higher legs to minimize this support surface heating. I have to note that I never checked for or noticed this support surface heating with the other units I have owned.I do want to again emphasize how effective this unit is in keeping my coffee warm. I always have used ceramic cups (not mugs). They have a raised outer ring on the bottom that keeps most of the bottom surface off the heater; only the raised ring is in contact. This unit keeps that last half cup of coffee very warm (not hot) and still pleasant to drink. The two other units I have owned did not perform as well. You may need to experiment with different cups to find ones that perform well with this kind of heater.