EXTREMELY SIMPLE TO OPERATE - The clock has been designed with absolute simplicity in mind and is very easy to operate. Perfect for adults, children, teens, seniors and the elderly..HIGH SPEED USB CHARGE PORT - 2 AMP USB Rapid Charge Port - Charge Quickly! Most conventional USB charge ports are 1 amp. Having 2 amps means more power, faster charge times and gives you the option to charge more powerful devices..HIGH / SOFT ALARM VOLUME - Choose the alarm sound that is best to wake you up.BATTERY BACKUP (2 x AAA Not Included) - Use two (2) AAA batteries for back up in case of a power outage. During battery back up the screen goes blank, but alarm and time settings are retained, and the alarm will still sound.EASY TO READ ILLUMINATED RED LED DIGITS - Easy to Read Red Numbers on the clock are very clear with extra bright quality, See from across the room or even without glasses in the middle of the night!