visual analog Timer could be used on many occasions. It helps teachers to allocate students' school time effectively. It's also a great assistant for the management of work time at office. It helps parents to supervise the children's time over study and games. Can be used at home, school, gym or other outdoor activities.Two reminder modes: vibrate and ringTwo gear adjustable bracket for comfortable viewing size: 80 x 90mmMaterial: Plasticcolour: BluePackage Contents:1 x Visual TimerOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.