Specifications:Material: ABSUSB Input: DC 5VLight Color: blue,whiteFM Frequency: 87.5-108 MHzProjection Distance: 0.5-5mVolume Adjustment: 0-15 levelsHour Format: 12H/ 24HBrightness Adjustment: 4 levelsBatteries: 1*CR2032 (included) or DC 5V Package Lists:1* Projection clock 1*CR20321* USB cable1* 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.