This digital clock is not easy to get deformed and bring you much convenience. With multiple brightness adjustment, it offers a great user experience. The material enjoys the high durability, not easy to deform or break. Features -Color:Black -Material:Plastic -Size:17.50X6.80X3.50cm/6.88X2.67X1.38in - Battery: 3pcs AAA battries(not included) - Lamp Color: Green - Brightness Level: 3 levels adjustment - The maximum countdown time is 23 hours, 59 minutes and 59 seconds. - With a stable base, and this vibration alarm clock can stably and firmly stand on your table. - With hygrothermograph function, four adjustable lighting models, more convenient to use. - Owning the and break resistance ability, very practical, with good texture. - With its clear and visible time and date display, you'll never have to worry about missing an important appointment. - control mode, the voice control can be turned on after the LED is turned off. Package list: 3 Digital Clock 3 x USB cable 3 x Instruction Manual (English and Chinese)