About This Item Wireless Charging: This digital alarm clock supports most wireless charging phones. Simply place your wireless charging phone on the top center of the alarm clock to charge it effectively. Voice Control and Adjustable Brightness: Press the "Down" button to activate voice control mode (on: SD). The LED display will automatically turn off after 15 seconds, making it very convenient for nighttime use. If you prefer this mode, you can disable it and press the "Down" button to activate always-on mode (on: SD) to display the time at all times. 5-Level Adjustable Brightness: This digital alarm clock features 5 levels of brightness to suit your needs throughout the day and night. Voice control mode can be activated at night, a thoughtful feature for those who are sensitive to light. 3 Alarm Settings: This LED digital alarm clock offers a 12/24-hour clock display and allows you to set three alarms to remind you of different events. You can set multiple wake-up calls (such as snooze) or parties to ensure you never miss an important event. Dual Power Supply: Powered primarily by a plug-in USB cable or by four AAA batteries. Using battery power is not recommended as it will drain the battery quickly