With the Philips AJ3400 / 12 you set 2 alarm times at the same time. Handy, because that way you only need 1 alarm clock to wake up 2 people. As an alarm you choose between the traditional buzzer and your favorite radio stations. With the buttons on top of the alarm you set up your 10 favorite radio stations. The alarm clock works on mains power as well as on batteries, so if the power fails, the alarm will go off.