【Two Alarm Clock Modes】: Size: 8.8*5.3*2.8 cm, high-definition large screen, bold characters, black large LCD digits, digital alarm clock, two modes: normal time mode, alarm time mode, also includes countdown function, other functions include: time display, date, 12/24-hour switch, luminous function, etc. Please install the battery before use.【Alarm Clock and Snooze Function】: In alarm time mode, the alarm clock has 9 different alarm melodies to choose from, you can activate the snooze function, only when \"? \" and \"zZ \" are displayed can the alarm clock and snooze mode be used effectively. Turn off the \"? \" and \"zZ \" characters with the \"ADJ \" key, press the \"SET \" key to stop the alarm or other keys to pause, snooze interval duration (1-60 minutes).【Luminous Function】: The digital alarm clock has a luminous function. Press the \"LIGHT \" button to turn the night light on or off, the light will automatically turn off after 5 seconds. When the alarm clock reaches the set time, it will sound for 1 minute, and \"LIGHT \" will light up for 5 seconds. When the snooze interval is reached, it will sound twice, 1 minute each time, and \"LIGHT \" will light up.【12/24 Hour System】: In normal time mode, press the \"ADJ \" key to switch between 12/24 hour time system, all keys have key tone. You can place it in your bedroom, on your desk, in the kitchen, in the office, or when traveling, so you can easily read the time without disturbing your sleep.【Timer Function】: In any time mode, press the \"TIMER \" button to enter the timer mode and set the countdown. The time range is from 23:59 to 00:00. When the time is up, an alarm will sound. When the set time is reached, the alarm tone will sound for 1 minute, and \"0:00 \" will flash continuously.