Material: ABS materialSize: 18.5 * 9.5 * 4.2cmPower type: external power supply, 1 * AA battery (for memory time, the package does not contain battery)Package contents: 1 * electronic clock, 1 * power cord, 1 * product manual.1. LED digital display, clear, generous, beautiful and convenient to use viewing time.2. The projection LCD can be rotated, and the time projection can be turned on or off by pressing the projection key.3. The snooze function will ring again after pressing the button for 5 minutes after the bell rings, so that you can wake up slowly from your dream.4. The brightness eye protection function is automatically adjusted, and the automatic half-light mode is turned on. The brightness automatically darkens at 18:00-5:59 every day, and the automatic brightening interval can be set. Lightly press the top button to adjust the brightness.