Features : Date shows the same screen display time, date, week, can switch 12/24 hours system, a variety of display more intimate. When the voice control mode is turned on, the screen display will automatically turn off (enter power saving mode). When you tap with your hand or make a sound (greater than 60 decibels), the screen display will automatically wake up. Third, brightness automatically adjust, adjust brightness according to product time, protect your eyes from irritation. Specifications: Product Name: USB clock notice board Serial number HSD1140C Material: ABS plastic +PMMA Power: DC4.5V1A Light source: color backlight External power supply: USB Battery powered: A*3DC4.5V Product weight: 150g Packing included: 1*Wood clock 1*Instructions 1*Charging line 1*Packing box Notes: 1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation.Thanks!