Alarm clock made by POLLMAN.The time display is digital. There are 2 power supply options (2 AA batteries or power supply which is sold separately and is not included in the package.The screen is illuminated with an LED light bulb which with the help of a sensor is automatically activated as soon as there is no natural or artificial light at all.( there is the possibility of disabling this function). The wake-up function can be extended every five minutes