Description: Material: The electronic clock is made of durable ABS material, lightweight and simple. Voice Control: The clock can wake up when your clap your hands when the ambient sound reaches 90 decibels, or gently beat the desktop where the desktop clock is placed, the clock can be woken up and automatically extinguished after 16 seconds of the display. Design: The digital clock has 4 digits large character LED display, one screen dual display, and can display three sets of clocks, a time display, date display, and a temperature display. 2 Ways: When using a USB plug, the screen will light up for a long time; when not plugged in, you can use voice activated to wake up mode (you need to bring your own 2 AAA batteries) 5 Buttons Control: This clock has brightness adjustment, a single press of the Button can directly adjust two levels of brightness, divided into daytime and nighttime display. Specification: 18.5cmx6.5cmx9.5cm/7.28inchx2.56inchx3.74inch Package Includes: 2 Pieces Digital Clock, 2 USB Cabes Note: Please allow slightly errors due to manual measurement and different monitors.