Tips for using the writing pad 1 When the writing pad is left for a long time or not used for a long time the delete button may not be deleted Please remove the battery rub it with your fingers or clamp the positive and negative poles of the battery with a metal object for 3 5 seconds You can reactivate the battery do not reverse the front and back of the battery reinstall it into the writing board and delete it normally 2 The initial state of the handwriting pad lock button is off please confirm whether the lock button is turned on for the first use Feature Brand Name DoukuModel Number dk14Product Name Drawing BoardMaterial Metal Package including 1xPackage of Drawing Board