[Easy Snooze Function & Dual Alarm]: When the alarm goes off, press the vibrate button or the snooze button at the top of the clock to enter snooze mode and repeat the alarm for 9 minutes. Press and hold the vibrate button for 2 seconds to turn off the alarm. Two sets of independent alarms are also convenient for different schedules. [Wake Up Easily with Strong Vibrations]: Unlike traditional alarm clocks, this super-loud alarm clock is equipped with a vibration function. For those who don't want to be woken by the chime or don't want to disturb others, you can choose to use vibration-only mode as a bedtime wake-up call. [Multiple Wake-Up Modes]: In addition to vibration-only wake-up, you can also choose to wake up with a chime only or with both a chime and vibration. The super loud alarm is sufficient to wake up deep sleepers, the hearing impaired, or the elderly. [Adjustable Volume and Brightness]: This vibrating alarm clock supports 4 volume levels (ranging from 0 to 110 dB) and 5 brightness levels. You don't have to worry about the screen being too bright to fall asleep or too dim to see the time, while the adjustable volume offers a variety of options for the elderly, teenagers, or the hearing impaired. [USB Charging and Memory Function]: This bedroom alarm clock needs to be plugged in and has a memory function when 2 AAA batteries (not included) are inserted. There's no need to reset the alarm after an accidental power outage and restart it. However, when powered by batteries alone, the screen will not light up and the vibrator will not vibrate.