I use a large metal insulated cup with lid and found that only the very lower area of metal cup gets hot, not the entire cup

Very disappointed with this product particularly because I was excited to have a consistently hot cup of coffee at my desk.

when you pick up the cup heater goes off, no need to remember to turn on or off just take your cup with you, and your safe.

flat-bottom cup kept liquid luke warm.

I ordered my Yvoir cup warmer receive

This cup warmer worked wonderfully until the burning smell happened as other reviewers have mentioned

The directions didn't say the cup activates the warmer so this confused me.

Make sure you have a heavy enough cup to engage the sensor.

I purchased this cup warmer and noticed the volts/hertz are not what you’d normally find in the US.

Nice cup warmer that can be plugged in via usb

The directions didn't say the cup activates the warmer so this confused me.

Nice cup warmer that can be plugged in via usb

I don't have crazy thick cups and tried with the thinnest cup I

If you start with a hot cup it will keep it hot

It actually heats up the cup itself and burns to touch when you pick up the cup or mug

But then again, if you weren't at least a little picky about your drinks, you wouldn't be looking for a cup warmer, huh?I'll consider returning it, but it does perform as intended.

However I gave it a 4 stars because it does not keep a full cup as hot as one would normally like it

This doesn't warm ceramic cups much

I have used other cup warmers; they kept the contents of my cup hot and the cord was longer.

Other than that, this is a nice coffee cup warmer to have.

My husband brings me a hot cup of brewed coffee with foamed heavy cream every morning.

Nuthin’ like a warm, cozy cup of coffee/cocoa, eh?

I love this coffee cup warmer

It keeps your cup warm

Platform gets hot but doesn’t warm cup or contents.