[Voice Control Function]The battery alarm clock has the voice control function, that is when the clock detects the sound over 90 dB, the LED display lights up and you can also light up the digital alarm clock by Press ing the key "SNOOZE/LIGHT". If no sounds or actions, the display goes off in 6 seconds to save energy. Please be noted that when you keep the clock connecting to the power, the sound control function is turned off and the display always turns on[2 Alarms with Snooze Function & Nap Timer]The alarm clock battery powered has dual alarms and you can set 2 alarms in one day to plan your time appropriately. There are 40 ringtones for you to choose and the volume can be also adjusted(8 levels for you to choose). With the snooze function, you can just Press the Snooze/Light button to get extra 5-60 mintues snooze time. The clock also has a nap timer to give you a 5,15,30,45,60,75 or 90 minutes for a break[Week Display & 12/24H & Adjustable Brightness]Different from other alarm clocks, it can also show the day of the week. You can choose 12H mode or 24H freely. The brightness of the portable alarm clock can be adjusted in 4 levels manually to meet your need. During the charging, the LED screen always lights up and automatically adjusts the brightness in 3 levels for different periods[USB Charging & Built-in Backup Battery& Low Battery Alert]There is a USB charging cable included for the power supply(No Adapter) to charge the rechargeable bedside clock. A built-in backup battery to save the settings of your recharging clock in the event of a power failure. The low battery indicator light of the travel clock can remind you to charge the clock in time (Attention: Please connect with the USB port or ONLY 5V/1A and 5V/2A adapter to charge the clock)[Modern Design]The stylish and modern LED alarm clock looks aesthetically appealing and you can put it in your desk, bedroom, living room to decorate your room.Colour:blackMaterial:ABSPackage Contents:1 * Alarm clock 1 * USB cableOnly the above package content, other products are not included.Note: Light shooting 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.