About The Visual Countdown Timer-What is Intuitive Design? Intuitive design is used informally describe designs that are easy to use. So,When a user is able to easily understand how much time they left in daily life or meeting, not only based on the numerical digits, visual timer could provide the best views to see time left . Quickloong visual timer designed for adults, kids time management , Easily to managed your time move to next activity, for kids reading , Classroom teaching, Gym training, Kitchen cooking , home games, outdoor baking, office meeting,etc. This countdown timer work type is electronic type and use 2 AA batteries to power the red dial moving, When the dial vanished, The device start to alert user with beep sound. To reminding time’s up. 7inch diameter size provide wide view, Considering various usage scenarios, It has the stand and two strong magnets on the backside cover, a hook to give user best angle views. Advantage: Easy to set, Big size, Red round dial means time, Easy to turn off the sound. Mute low and loud sound optional, A hook ,stand and magnets to stick on metal surface. Function: Countdown time recording, Beep sound alert, Max. time up to 60 minutes. How to use: Turn central knob clockwise direction to the time you need. E.g. You need 20 minutes time, just turn clockwise rotation to 20, when the time’s up, it will ring Beep sound. Specification Color: Red / Green three colors optional Weight: 0.84LB (380g) Max Time up to: 60 Minutes Work Mode:2xAA batteries to power Materials: Plastic ABS, Metal, Soft Magnet Margin of Error: +/- 1 minute Package included: 1pcs timer, 1pcs transparent case Do not turn the time more than maximum 60 minutes time limit with excessive force as this may cause damage.