& : This Peakeep basic alarm clock can be activated by connecting to electric power and 4 AA batteries(self-supply), ensuring the alarm still works and re-set-free during the power outage because of the battery backup function. : . Besides, the display can be light up for 20s via a simple touch on top when power outages. Dual power supply deliveries this alarm clock rings on time in any environment, taking no risk of missing any important schedule! : With this dual power supply and its 6.8-inch-long and 3.1-inch-high mirror screen, this big number clock allows you to see the display time, but also serves as a makeup mirror. It is a great choice for your own use or as a table desk gift alarm clock. : Peakeep designs a brightness clock with 6 adjustable dimmers and large LED display to che