Lock your phone in the box.Prevent phone addiction Spending more time on study work and sleep. You will have a happiness life Six Advantages Portable and Light Outside diameter: 8.07×3.74×0.78 inch. Comfortable to hold and convenient to carry around The back four-leaf clover pattern Can anwser the call when phone is locked.But you should make sure that the screen of phone faces the four-leaf window when putting in your phone. Product Parameter Note: Before Buying ,make sure phone’s size, phones with thicker and larger cases may not be suitable. Read more Six Advantages Super Long Standby Charge for 60 minutes and last for 30 days Phone and the lock box, can charged together Emergency Procedure Press 10 seconds for emergency start, for emergency use. Each product has only two emergency unlocking opportunities for life. The Silent Mode Press three times continually to switch silent mode. Otherwise, There will be a beep when operating. Read more Method of Application Open the box and put in your phone If the side button is useless to open the box, please quickly press the side button several times to activate it, or charge it. Second Setting Time Press the button once to light up screen. Short press button once, increase 5 minutes. Short press button twice, increase 1 hour. (The maximum setting time is 12 hours) After setting,Press button and hold on 2 seconds, and 5s hesitation occurs.If you want to end the countdown setting and reset, just press any button.After the 5s hesitation. Lock phone. You can do nothing Read more Application Scenario Stop playing mobile phones late at night Spend more time on studying Spend more time on accompanying family Read more