Purple bookmark with timer function, can switch between time and timer modes. This is an electric timer bookmark designed to encourage children to read books for longer. It's being sold as junk because the alarm sound doesn't work, so it can't alert you when the reading time is up, which is its original purpose. Aside from the alarm sound, the timer and clock functions work perfectly. There are no instructions or box. The company that made the bookmark is still in business, so please refer to their website for information. - Brand: mark-my-time - Color: Purple - Function: Timer function - Modes: Time/Timer (△▽) mode switching possible - Battery: LR1130 button cell - Back: Battery replacement possible Thank you for viewing.