LEORX Projection Clock - Projection Alarm Clock with Temperature Humidity and Battery Powered Color: Black. Material: Durable hard plastic. Size: 15 * 11 * 2.5cm. Temperature range: 0C50 C (32F 122F). Humidity range: 20%RH99%RH. Display time, date (from 2001 to 2099). Powered by 3 * AAA batteries (not included). Projection design, can display the LED screen on wall or ceiling.