1、The clock screen illuminate automatically for easy night-time seeing 2、Large LCD display, easy to read numbers and save power 3、Timing function, perpetual calendar and 24 hours / 12 hours transition function 4、Intelligent white backlight, built-in sensor to turn on/off the backlight automatically 5、Suitable for car, office desk, home Description: The clock screen illuminate automatically for easy night-time seeing. Large LCD display, easy to read numbers and save power. Timing function, perpetual calendar and 24 hours / 12 hours transition function. Intelligent white backlight, built-in sensor to turn on/off the backlight automatically. Suitable for car, office desk, home. Specification: Condition: 100% Brand New and High Quality Power: 3 X AAA batteries (not included) Shell Material: Plastic Size: Approx. 150 x 90 x 60mm/5.9 x 3.5 x 2.4cm Type: Alarm Clock Package Includes: 1 X LED Digital Alarm Clock Note: For different monitors, the color may vary slightly. Besides, please allow some errors of manual measurement, thanks for your understanding.