Time Tracker Mini. Set it and go! You and your students will reach for this super simple timer to support a variety of classroom activities. Offers unique visual and auditory indicators, including a warning alarm. Just 2 dials -- total alarm time and warning time. Total alarm time can be set from 5 minutes to 2 hours, in 5-minute increments. Counts down until the colored light glows, and the alarm sounds. Adjust volume or turn off sound for visual timing. Measures 3 1/4 inchesL x 3 1/4 inchesW x 4 3/4 inchesH. Requires 3 AAA batteries, not included. LER 6909.