Led Digital Alarm Clock, Bedside Clock With 5 Optional Alarm Sounds, Usb Charging Port, Full-range Brightness Dimmer, Big White Digit Display, Snooze f74 Compact Design with Large Display: Small footprint(5.9"x3.11"x1.65") with big white LED numbers easy to read day or night and display brightness can be easily adjusted from 0% to 100% depending on personal preference. Excellent for the elderly or people with poor vision.5 Optional Alarm Sounds: Pick your favorite sound among the 5 alarm sound options: (Beep/Buzzer/Bird Sound/Piano Music/Soft Music). Wake up to an adjustable alarm volume from 30-90db. Finally enjoy a refreshing way to wake up in the morningUSB Charging Port: Integrated USB port charges your compatible smartphone and other devices while you sleep. Start your day fresh with a fully-charged phone. (USB cable not included)Easy-to-use Snooze Function: A simple press of the large snooze button located on top of the clock allows for extra time to enjoy those mornings when you need some extra Zzzzs. Experience zero stress when setting the time or alarm. Perfect for kids, adults and the elderly.Mains Powered and Battery Backup: Come with a 3 Prong plug that will go into your wall socket to power the clock, and you have the option to back up the time and alarm settings with 3 AAA batteries (NOT included) in case of power outage. During use of the backup battery, the screen will go blank and the alarm will not sound.