Nunflan products are designed to be easy to use, multifunctional, and simple to install. Welcome to a new way to experience a simple and better life. Nunflan projection alarm clocks have a USB ports and power-off memory, which can memories all time settings in case of a main power outage. The 180° swivel projector projects the clear time onto your wall or ceiling. 4-level display brightness (OFF-Dim-Medium-Bright). The LED digital alarm clock has adjusted brightness automatically function. If you select "AU" mode, it means that the LED display automatically enters into the low brightness mode in the dark environment, you don't need to adjust brightness manually when the environment is changed. The large 7" curved screen clock has a dual alarm with a snooze function (The default snooze duration is 9 minutes). This clock radio features a total of 15 preset memories of FM stations which allow you to preset your favorite stations and access them quickly (FM:76.0-108.0MHz). The sleep timer function allows you to fall asleep with the radio within 90-75-60-45-30-15-10-5 minutes(customized). The radio will automatically turn off after the specified time. And radio can adjust volume from L00(minimum) to L15(maximum). Note: 1. Before using our projection alarm clock, please read the user manual carefully and keep the manual for future reference. 2. Before starting up, please remove the plastic insulator tab from the button battery compartment in the back. 3. Use the original cable of your mobile phone for charging. Charging with this USB jack may take a long time. 4. Backup battery keeps the projection alarm clock setting in case of power failure to ensure the time is accurate and the alarm sound at the set time. There is no projection function in battery-powered mode. 5. Backup battery just maintains the clock time-not for powering the clock. Nunflan Ceiling Projection Digital Clock, 15 FM Radio Smart Alarm Clock with Large Curved LED Display, 4 Dimmer, Dual Alarm with 2 Alarm Sounds USB Phone Charger, Snooze, Backup Battery Digital Clock: 7" LED Digital alarm clock for bedrooms ceiling with sleek curved screen The 180° Time projector projects time clearly onto the wall or ceiling 4-level Time Brightness, automatically into the low brightness mode when it's dark 15 FM stations preset your favorite stations and access them quickly (FM:76.0-108.0MHz) Dual alarm clocks can be set to alarm at an appropriate time with 12/24H