Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Does an image stay if not erased in time
Document: This is what we have been looking for to help our daughter stay organized. We use it to create lists of things to do. She checks them off when completed and when the entire list is finished, we erase it and it is ready for another list. It will definitely help us save on using paper. We expect to use this for a long time.
It's far cleaner than dry-erase boards, and has better image quality than the magnetic doodle pads.
No holder for pen not sturdy compared to other boogie boards not free standing board material cardboard  sharper image board heavier
Note that you can't erase portions of the screen, it all gets erased when you press the button.
I got mine as a gift from Brookstone 3 years ago. The concept is nice, but this product is a failure. There's nowhere to put the stylus, the screen contrast is awful, and it's incredibly expensive for the cheap quality. Worst of all, I hadn't erased the board more than 50 times and it just stopped working.
I bought this for my brother because he loves to doodle. This has been perfect for him because he could draw whatever came into his imagination and at a click of a button, it was erased and he could start over. But now it is dead. After a year and 5 months. I had not noticed when I bought it that it was disposable so when the battery dies, you throw it away. So am I going to spend $35 and get him a new one? Nope.
The board works as I expected and is handy note board. It would be useful if there was a slot to place the stylus. We made a simple case with slot for stylus and stiff side to protect the board while carrying it.The most useful upgrade would be for a memory function which would store xxx images from the board. When he board surface is full of image, it would be very useful to be able to save teh image and then keep writing.
had to go through 3 boxes at the store to find one that was all black screen, some of them had areas that were pushed down. finally found one that looked good. brought it home and would not start. had to reset the erase button for it to work. used it once for some figures and when I erased, it looked okay. few days go by and went to use it again, the figures were back but faintly. will not erase now. sorry but don't waste your money.
SO annoying. This is a pretty neat product -- except that the button you push to erase your content is right along the top edge, just exactly where your fingers go when you are inserting it into and removing it from the neoprene sleeve. I can't count already the number of times I've accidentally erased all my content. And once content is gone, it's gone -- it's not as though there is memory. VERY annoying. I would not buy again for this reason.
Couple things1. This would be a great toy for kids in the car IF it wasnt so flimsy. Might be ok for a teen, but a younger child would break this quickly.2. Unless you photograph what you write or draw on it, this is in now way better then the dollar store magic writer with the film you pick up to erase it. The screen flash erased on me twice without touching the button while I was writing.3.
Answer: The image stays till the erase button is pushed.   If the lock button is activated, you can still add to the image while the lock button in activated but it will not erase till unlocked.  I've used my Boogie board as a working list that was active for almost 4 weeks. The minute I was finished with the list I used the erase button and the board surface was back to perfect black.  It works great!