Specifications: Material: ABS USB Input: DC 5V Light Color: blue,white 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) or DC 5V Package Lists: 1* Projection clock 1*CR2032 1* USB cable 1* User manual Features: Large LEDs digits to display time, humidity and temperature easy and convenient for 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 date 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 makeup mirror. Built-in powers off memory function.