Features: The 1.8 inch large LED mathematical display screen has clear red numbers and is easy to read. The large screen digital alarm clock has a 90 degree rotating base, which is easy to adjust the angle and view. Two kinds of brightness: high brightness and low brightness can be adjusted to adapt to light of different brightness. The alarm clock has an adjustable progressive volume and a snooze function. (Note: This product is a built-in power-supply of US standard, and the power-supply voltages should be between 110V and 120V.) It is suitable for children, teenagers, adults and the elderly. It can be used as a practical gift for birthdays, holidays and Christmas. Specifications: Material: plastic-Material Size: Approx. 144x88mm/5.67x3.46inch Voltage: 110V~120V Package Includes: 1x Alarm Clock note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color of the item.