DUAL FUNCTION - The Mark My Time digital bookmark serves as both a bookmark and a reading timer, making it a multi purpose tool for readers of all ages. DIGITAL TIMER - The digital timer stores up to 100 hours of reading time. You can set countdowns the reading timer to help improve reading habits, with options to pause and resume as needed. TRAVEL SIZE - This timer bookmark for kids is compact and lightweight. This digital bookmark is easy to carry around, making it ideal for use at home, at school, or while on the go. BATTERY OPERATED - The bookmarks for reading kids are battery operated, ensuring long lasting use without the need for frequent replacements. SIMPLE TO USE – Keep your bookmark with your favorite book and track your reading minutes every day!