You always have the right time in view with this radio clock from TFA, because the time is set precisely to the second via the DCF77 signal and the change from winter to summer time also takes place automatically, the digital display is large and easy to read, not ideal only for at home, but also for the office, the waiting room, the entrance or reception area, on the clear display the inside and outside temperature is shown in addition to the date with the day of the week written out, to determine the outside temperature, position the supplied transmitter outdoors, the values are then transmitted to the radio-controlled clock via radio with a range of up to 70 m, great additional function, a temperature alarm can be set so that an alarm signal sounds, for example in the event of frost or extremely high temperatures, this practical device can also be used as an alarm clock be, the simple and clear design with a wood look fits into any environment, regardless of whether you want to hang up or put down the radio clock, batteries 4 x 1.5 V AA (wall clock), 2 x 1.5 V AAA (transmitter) not included