I really love this travel alarm clock whick comes with an a/c wire to power the clock. It also comes with a compartment where you can put batteries to run the clock so you'll never miss an alarm if the power goes out. It's lightweight and small but the digital numbers are big for easy viewing from across the room if needed. The alarm clock works well with a snooze button. The clock feels well made and sturdy. If you place it next to your bed it has a brightness dimmer so it's not blasting you in the eyes and keeping you awake. I recommend this digital alarm clock highly and personally use it on my nightstand as my main bedroom clock. It's also compact to carry with you on trips. Love it!