Good build quality
The switch is pressed with force and makes a click, I did not expect such a switch for such a price.
Large and convenient screen
Availability of two connection modes
BUT
The most important purpose of a tuner is tune the guitar. And sometimes it's laggy. And idk why (maybe because it costs 30$) sometimes during the tuning process, the tuner may show different notes for a split second, and this makes tuning your guitar annoying. I love the design of this tuner, but, uhhh, tuner is for tuning, so i guess i'll buy something else.