Intruction for use: <br><br>1. Press 'Open Button' to open the lid. <br>2. Put your mobile phone inside. <br>3. Close the lid and press R: 'Set&Lock' button to start to set the timer. <br>4. Press button A to increase minutes, press button B to reduce minutes. Press button C to increase hours, press button D to reduce hours. <br>5. Press and hold 'Set&Lock' button for approximately 3 seconds until the timer begins to 8 seconds countdown. During the countdown you can cancel by pressing any button. <br>6. The lid will open automatically when the timer is finished. <br>7. Max setting time is 24 hours.  <br><br>Other functions: <br>1. Press the R: 'Set&Lock' button for 5 times to access the mode settings. Press A or B to select mode. <br>EE:ON is sound mode. <br>EE:FF is silent mode.  <br><br>Important to note: <br>1. The product includes chips, a battery and an electronic screen. It's not waterproof or resistant to everything. <br>2. The lock timer has a 0%-1.5% chance of timening error due to changes in tempratures or battery status. <br>3. Please charge the battery in advance if the box will be not used for a long time.