It is an ideal time management tool for kids and adults. Farewell to procrastination and developing a sense of time Easy Timer for Kids and Adults:Twist the setting knob clockwise to set the countdown time you need then wait for the colored disk It is an awesome visual timer for toddlers, kids, adults, and seniors. because it is simple operability and readability You don' need to worry that the ticking noise makes you . The timer includes 3 modes:mute ,low, and loud. You can choose the mode you need on different occasion This countdown timer can be applied on different occasions, such as , kitchen, at school, and at work. It be a professional kitchen timer, classroom timer, study timer, and productivity timer Specifications High-concerned chemical:None (The product printed words depending on the batch, but this does not affect use) Color: White Material: ABS Package Contents: 1*Visualization Countdown Timer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.