Electrohome Alarm Clock Radio with USB Charging for Smartphones & Tablets includes Dual Alarm, Battery Backup, Auto Time Set & 1.2" LED Display with 4 Dimming Options (EAAC470W) Convenient USB charging port compatible with all smartphones, tablets, mobile phones & mp3 players Advanced SelfSet technology automatically displays the correct time and date for a hassle-free setup WakeUp battery backup sounds alarm even during power outage and also maintains your alarm & clock settings (Lithium battery included) Large 1.2" dimmable LED display offers four brightness settings (high, medium, low, off) to adjust the display to fit your personal preference at the touch of a button Digital AM/FM radio boasts memory for up to 20 programmable stations, and digital tuning provides easy access to each station