The Time Timer MOD is a unique visual timer and the ideal solution for anyone who struggles with time. For over 20 years, children, adults and groups have used the Time Timer to stay focused, productive and relaxed throughout the day. As time elapses, the signature red disk disappears, creating a clear and simple picture of the time remaining. Portable and quiet with a protective cover, the Time Timer MOD is a great way to promote efficient time management at work, school and home. The Time Timer MOD is approximately 9 cm and suits the more 'destructible' child as it comes with a silicon cover.