This is a learning timer that allows you to choose between sound and light modes. I repurchased a new one because the one I was using stopped working, but it turned out it was just out of batteries... It's a waste, so I'm putting the new one up for sale. It's unused, but I'm sorry, it's been opened. The insulation strip hasn't been pulled out! The screen still has the protective seal on it, so it's clean! It's easy to use because it has a stand. You can choose sound only, light only, or sound and light with the switch on the back. It was convenient because I could use it when studying independently at the library or cram school. It also has a clock function. It can also be used as a kitchen timer! Purchased at Aeon, it cost about 1800 yen! "Kitchen Timer that alerts with light and sound!" ● Light and sound switching function (choose from electronic sound only, light only, or electronic sound & light) ● Countdown and count-up function ● Clock display ● Repeat memory function ● Hanging hook hole and magnet included (String not included)