Non-returnable!!!
I gave this a two because first of all you have to make sure the sensor is facing you or it won't work right. I wanted to return it because after getting it, I realized that I actually drunk more often than I thought. However, when I went to return it Amazon said it can't be returned because of flammable liquid!?! So, make sure you don't buy this of you to just "check it out". You won't be able to return it.
Rating: 2 stars