● ●Digital Tuning FM Radio with Sleep Timer: This alarm clock is built in FM radio frequency from 87.5-108MHz. It could auto-search a station for you or you can manually adjust frequency to the station you want to listen to. A 3.5mm FM antenna is packed in the box, pls connect it before turn on radio to get a better reception. When listening to FM station, you can press the “SLEEP” button to set the sleep timer from 10-90 minutes, every step will reduce 10 minutes sleep time● ●Alarm Clock with Radio/Buzzer Alarm Sound: This alarm clock is 12 Hour Time System. When you set clock or alarm, there is a “PM” indicator light to tell you it’s afternoon, if this indicator light doesn’t bright, that means time is a.m., pls note this. As an clock radio, you can choose buzzer or radio as the alarm sound, just to press the “ALARM/SET” button to switch. Alarm sound isn’t adjustable, it’s from low to high to max, if you are heavy sleeper, this alarm clock radio is a good choice● ●Dual USB Charging Ports with 1.5A Output Power: Benefiting from the powerful power supply capacity of the adapter, we designed two USB ports to make it easily and expediently to charge your cellphones, tablets, Kindle and other 5V device without any other adapters or chargers to occupy your socket ports. In our practical test, the max output up to 2.0A and average output is 1.5A, charging much faster than general adapters● ●Large LED Display with Dimmer: LED Screen size of this clock radio is 1.2 inches, the display numbers is very large and very easy to see anywhere in your bedrooms or living rooms. The power cable is 1.5M length, you can put it on your table, shelf or other place in your home or office. This LED alarm clock has 2 dimmer levels, one for daytime and the other for night which don’t disturb your sleep, press the “DIMMER” button to switch● ●Backup Battery to Maintain settings: This alarm cock radio is powered by an 110-240V adapter (included), plug in it to make the display bright and begin to work. If you install batteries(not included), it will memory your set of clock and alarm when power outage and you needn’t to set it again when power reconnect. Pls note that batteries only for backup, can’t make the display or alarm clock working when power outage