Fault-tolerance Mechanisms
Press power button 2 times to confirm the time setting, and there will 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 will be locked.
Only Emergency Calling Support due to Invisible Lid
The opaque box makes you won't pay attention to the notifications on lock screen. You only can use Earphone, Siri or Small Holes on the Semitransparent Cover to answer/ hang up the calling.
Portable & Huge Space
Max lock 2PCS x 11inch tablet PC without thick case. Support all folded mobile phone or 6PCSX 6.9inch phone locked at the same time. Feel free to take the lock box to the office, classroom, library and study room.