This simple timer supports a variety of classroom or home activities with both audio and visual reminders. There are two dials: one for a total alarm time and one for the amount of warning time you'd like given before time is up. The timer turns green, yellow, then red as it counts down. The 360 degree viewing makes it visible to students from every angle. The total alarm time can be set from 5 minutes to 2 hours, in 5-minute increments.

Requires 3 AAA batteries, not included.