Check the listing for details. Mark-My-Time Digital Bookmark, Clock & Programmable Countdown Timer w/alarm. Condition: Used. Listed at 10.00 USD. Mark-My-Time Digital Bookmark, Clock & Programmable Countdown Timer w/alarm. Great for Read-a-thons and gamifying reading in younger readers. About this item Track your time: Digital countdown timer and alarm that alerts readers when they have completed their required reading time. Track total reading time: Digital timer also tracks cumulative time, which stores up to 100 hours of reading time over multiple sessions. Check for fluency: 60 second countdown and count up feature displays the seconds at the one-minute mark to aid in fluency checks. Make reading fun: Accurately track children's required reading times to help take the work out of daily reading homework. Fun colors: Fun colors and electronic functions encourage kids to make reading a daily habit. Count down and count up modes. Clock mode. Easily replaceable battery not included.