[30 days long working Time with Auto-Timer]: Max working Time Reach Up 30Days Once Full Charge. Max setting Time is 99hrs and 59mins ,Super standby time over 90 days. Phone jail box with timer can make you reduce screen time, focus on work, study and life, effectively multiply your time. [Mini Portable and Design]:Easy-Carrying ,, Fashionable Phone lock box , Habit for Kids,Students,Adults. More respect and Love by lock box ,Make their Focus Back . [Two Locking Ways Optional ]: Phone's Screen Face to You,You can Use Phones except Games by the small holes .Phone's Cover Face to You,Only Emergency Calling can use by Earphone or Small Holes on the Transparent to answer/hang up the calling. (for kids using ,better choose phone's screen down so that they can not touch the screen ) [Emergency Calling Support]:You can Use Earphone , or Small Holes on the Transparent Cover Once important Calling . There is reserved power on the motherboard of phone lock box, so It unlock when time is up even battery runs out. [Fault-tolerance Mechanisms]: power button twice to confirm the time setting, and there be a 10 seconds countdown "hesitation period". At the "hesitation period", you can cancel the setting by clicking the power button one time, or it be locked. Fit for Most Thick Cased Mobile Phones Color: White Material: plastic Size:19x12cm Package Contents: 1 x phone lock box 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.