Module Parameters: Power Supply Voltage: DC 3.3~15V Power Supply Current: 10~20mA Time Display Format: 24-hour Setting Time, Date & Auto-Brightness: In normal display mode, press and hold the top setting button for more than 1 second to enter the time adjustment function. When the hour starts flashing, briefly press the button to change the value; long press to enter minute adjustment, minute flashing, briefly press the button to change the value. After setting the minutes, long press the button to enter the second adjustment, and briefly press the button to return to zero. After adjustment, long press the button to enter the brightness adjustment function, LL:3 is displayed, briefly press the button to change the brightness. Then long press the button to enter the auto-brightness function setting, display AL:x, briefly press the button to change the value, AL:0 is off, AL:1 is on. When AL:1, the screen will automatically change to level 1 brightness after 7 PM and automatically change to the brightness value in the Ld setting after 7 AM. Finally, press and hold the button to save the settings and exit. Note: The product is constantly updated; due to different batches, the actual product may have slight differences or color variations, which do not affect the use. Material: Plastic Color: D-black background white light Package Contents: 1 x 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.