digital display: time, humidity and temperature can be easy to reading. Projection function: project time, adjustable focus, 3-level projection brightness, can rotate the projection 180. Automatically light-adjusting:in this mode,the projection brightness can't adjust automatically according to inddor brightness. FM radio function: manual FM, the listenning time can be set, automatic search station. Dual alarm clock function: 2 alarm clocks can be set to any time separately, also set snooze mode. Indoor thermometer function: real-time temperature display, 12H/24H modes. 4 levels of display brightness can be manually adjusted as you need. The screen is special progressed which can be used as a . Built-in powers off memory function. USB Input: DC 5V FM Frequency: 87.5-108 MHz Projection Distance: 0.5-5m Volume Adjustment: 0-15 levels Hour Format: 12H/ 24H Brightness Adjustment: 4 levels Batteries: 1*CR2032 (included) / DC 5V shell Colour:White Character Colour:White type:A Material:ABS Size:183 x 75 x 95mm Package Contents: 1 x projection alarm clock 1 x usb cable 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.