Features: Projection time display, using high-brightness LED light source, clearer projection at night. Multi-angle projection. 180° flexible projection swing arm, adjust the projection angle as you like, and project the time onto the ceiling or wall. Brightness is adjustable. The screen brightness can be adjusted in three levels, and the projection brightness can be adjusted in two levels. Date display, you can know what day is today without looking at your phone. Temperature display. Not only can it be used as an alarm clock, but it can also measure temperature changes. Specification: Name: Projection clock USB Input: DC 5V Power Type: USB light color: A-green light / B-color light / C-white light Does not include 1xAAA battery Material: plastic colour: Black Package Contents: 1 x Projection clock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.