Monitor & record assigned reading times for different kids with different reading habits, all reading different things at different times, with this digital bookmark. Records daily reading minutes at the touch of a button. Children can use them to record their individual reading times. The timer has a clock mode and a countdown mode which is programmable for the amount of time you want your child to read. The alarm will sound when your child reads for the amount of time for which you have set the timer. There is even a cumulative timer for multi-session reading. The bookmark is about 6 inches in length and the timer is at the top of the bookmark for a total length of about 7 ½ inches. The timer comes with a replaceable battery and assorted styles and colors.