Material: plastic Color: black Dimensions (approx.): 9.2 x 3.9 x 9.2 cm Power supply: 2 x AAA 1.5 V batteries (not included) OR USB cable Temperature range: 30 F 122 F (0 C + 50 C) Humidity range: 10% 99% RH Temperature accuracy: +/- 1C Humidity accuracy: +/- 5% Scope of delivery: 1 * alarm clock, 1 * USB cable Modern. Versatile. Practical: The compact DCF radio clock will inspire you With the digital radio alarm clock in a cool design, you start the day perfectly. In addition to the exact time to the second, the DCF radio clock also shows the date, day of the week and room temperature. Functions: LCD display with blue LED backlight | DCF77 signal | Snooze function | Calendar function | Temperature display (Fahrenheit or Celsius) | Time display: switchable 12/24-hour format | Display type: Digital | Simple, intuitive operation | compact and light (perfect for travel)