It doesn't erase at all. Unacceptable. Avoid buying it, as you will need to buy another one in the end

It does not erase well..... and if you press or apply force to erase, it leaves indentations.... and if you use any glass cleaner or wet wipe when it gets dark, the surface starts to distort....
I bought it for an emergency for online classes, knowing that the size did not meet my needs, but I expected to at least be able to erase and rewrite.... something that proved to be very difficult... and makes the use of this board inconvenient...