SPECIFICATIONSBattery Included: YesBrand Name: NONEChoice: yesHigh-concerned chemical: NoneIs Smart Device: NoOrigin: Mainland Chinasemi_Choice: yes Type:Digital Alarm ClockMaterial:PlasticColor:ColorfulSize:2.5x16x6cm(0.98x6.30x2.36in)Power Supplies:USB Plug-in or 3*AAA Battery(not included)Package includes:1Pc Digital Alarm Clock Bedside alarm clock, dual power supply operation, memory function. It can be seen that 3 AAA batteries can be used alone (the LED screen consumes power and the batteries need to be replaced frequently), and the data cable can also be used alone (no memory function). When you use the USB cable and battery at the same time, the main function of the battery is to remember the time. When using the battery alone, in order to save power, we have also designed a sleep function, and the screen will automatically light up when there is sound.Brightness is adjustable. You can set the automatic mode (night mode) time according to your own schedule. Whether it is day or night, you can see the time clearly, even at night, there will be no dazzling lights, and it can even be used as a night light to guard your night.Temperature display range -10-50°, switchable FahrenheitTime system display, 12/24HThis alarm clock can be powered by batteries (without batteries) or plugged in.Note:1. Due to the different display settings, the real product may have a little color error.2. The size is manually measured, there is a slight error, please understand.