Features: 1Main Function: 5 display modes of clock mode, date mode, temperature mode, night mode, alarm clock mode. 5 operation keys are MODE, ALARM, UP, DOWN, SNOOZE/LIGHT. 2Power Saving: When battery powered, in any mode, no operation for 16 seconds, the LED display automatically turns off, but the system is still normal timing and detecting temperature. 3Anti Disturbing: In the non setting state, you can press the ALAM button for 3 seconds to turn off the display to prevent the night screen from interfering with sleep. 4Voice Control: Battery powered only, you can turn on the LED screen by voice, and the screen will automatically turn off after 16 seconds without operation. 5Brightness Adjustment: Press the UP key to adjust the brightness on three levels, the brightness is automatically dimmed at 18:00?6:00, and the brightness range can be set. Package included: 1 x Clock 1 x USB Cable 1 x Manual