Under Multiple ProtectionThis alarm clock charging station has a high strength casing made of ABS+PC material that are fire-resistant up to UL94 V-0 level. With the built-in 1700J surge protection, overload protection, over-voltage protection, over-current protection, short-circuit protection and overheat protection, your devices are well protected from multiple dimensions.
Time and Alarms Back UpWith a battery chamber on the back to hold 2 AAA batteries (not included), this alarm clock will not shut down even when a power outage occurs or it is disconnected from the power source. Unlike other clocks that solely rely on battery power, the batteries in this power strip alarm clock work longer as they are for backup.