Denver CRL-341 is a clock radio with a variety of features to help you wake up and sleep better. It has a sunrise simulation wake-up light that gradually increases in brightness 30 minutes before your alarm time, a sunset simulation sleep light that gradually dims over a period of 15, 30, or 60 minutes, and a variety of natural sounds and FM radio stations to wake up to. The clock radio also has a built-in speaker, a USB port for charging your devices, and a battery backup to keep your time and alarm settings in case of a power outage.