It took me a few days to figure it out. It's really hard to tell if your eyes are getting older, but there's a tiny button at the bottom of the LCD that you have to press to turn it on. This tiny button is the same color as the LCD, so you may have to tilt it to see it. First remove the protective sticker from the LCD. This button gives you 3 options. fruit, car and clothes. You can actually hear the ozone coming out when in use and all 3 options sound the same and the battery level is the same for all options. Not sure what the difference is but I left it on fruit and put it in the fridge. I would put this on the top shelf as ozone is heavier than air and will fall off. Ozone really does extend the life of the food in your fridge. It stays fresher without mold or softening. It's the size of a soda can and very cute. I charged it and as soon as I turned it on the display showed a reading of 91. I'll check how long this lasts before needing to charge again. I gave it 4 stars for the days of frustration it caused looking for that hidden power button. Otherwise it would have been 5 stars. After a few days in the fridge, when you open it first thing in the morning, you'll be amazed at the ozone. I like it. This is the most powerful thing I have! BUT: It hasn't even been a week, the battery is only 1/3 of what it was.
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