Featuring Emerson's award-winning and patented SmartSet technology, the ER100301 clock radio automatically sets itself on the first use to the correct year, month, date, day, and time. This clock features a USB port for charging iPhones, iPads, iPods, Androids and Tablets. The Bluetooth capabilities allow you to connect wirelessly to listen to your music. The soft blue night light is added convenience. The alarm can be programmed to operate on weekdays only, weekends only, or all seven days of the week. Set the alarm to wake you to your favorite FM music or news station, or to the buzzer. The clock radio adjusts itself automatically for Daylight Savings Time and Leap Year, as well as maintains the correct time when the power returns after power outages. Getting out of bed will no longer be a chore with the help of the ER100301Button cell battery (included) maintains time & alarm settingsEasy to ProgramPatented smartset automatic time setting systemAutomatically sets itself to the correct year, Month, date, day and time as soon as you Plug it in and after every power interruptionUSB output for mobile charging 2.1a 5VNight LightDigital Tuning FM radio, 20 station memoriesEasy-to-read, 1.4" blue LED clock display, dimmer controlBluetooth V4.1