Fangrui Product Details [easy To Understand] The Colored Disk Of This Visual Timer Disappear As Time Passes. It Is Super Easy To Understand For Young Kids And Help People Develop A Of Time [easy To Use] By Turning The Center Knob To Expected Time Duration, The 60-minute Timer Starts Counting Down [silently Work] Visual Timer Not Make Any Ticking Noise When It Is Working. 3 Alert Volumes Optional: Mute, Weak, Loud; Lasting Alarm: 3 Seconds/ [suitable For Many Occasions] It Can Be Used As A Study Timer For Kids, It Can Also Be Used As A Kitchen Timer, A Task Timer, Meeting Timer, Or Exercise Timer [more About Timer] The Indicator Light Flash To Remind Of Low Power Of Batteries. 2xaaa Batteries Required But Not Included. Power Suplly:2xaaa Batteries(not Included Batteries) Colour:blue Material:abs Size:about 7.8x7.5x4.5cm Package Contents: 1 X Visual 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 Differe