The item is a wonderful projection alarm clock, which is powered by AAA batteries, and can be used to display time, date with colorful LED backlight. It also has an alarm with a snooze function to remind you of every important moment. Besides, it can act as a thermometer and hygrometer to display environment temperature and humidness. Therefore, it is really a wonderful digital alarm clock for home and office use. Features - Color: Black. - Material: hard plastic. - Size: 15 * 11 * 2.5cm. - LED light color: multicolor. - Temperature range: 0°C~50 °C (32°F ~ 122°F). - Humidness range: 20%RH~99%RH. - Display time, date (from 2001 to 2099). - Powered by 2 * AAA batteries (not included). - Projection design, can display the LED screen on wall or ceiling. - Projection distance: 1-5M; 180 degrees rotation. - An alarm clock with a snooze fuction. - Can display environment temperature and humidness. - Support Celsius and Fahrenheit temperature for choice. - Powered by USB cable (Included). - Note: A high-volume battery will keep the alarm clock off due to voltage. Package list: 1 * Battery Powered 180 Degrees Rotating Projection Alarm Clock with Snooze / LED Backlight / Date / Temperature / Humidness (Black)