Countdown Function:Reasonable planning time,a good helper for managing study time,custom 60-minute countdown Energy Saver Mode or Voice activated screen:In the case of no USB charging ,lithium battery power supply, the alarm clock will enter the energy-saving mode, you can clap hands, tap the desktop or tap the product, the panel display will light up for 25 seconds, and then automatically turn off Alarm and Sound Adjustment:5 sets of funny polyphonic wake-up ringtones to say goodbye to annoying beeps,8-level volume adjustable, the volume can be adjusted at will,say goodbye to a sudden awakening, and don't worry about the alarm sound being too loud or too low Alarm Setting:2 sets of alarm clocks are set independently, specializing in irregular work and rest, and easy to handle children's daily work and rest habits Rechargeable Alarm Clock:The alarm clock is charged with the Type-C charging port,Use the included Type-c cable to charge easy to plug and unplug, and has a long service life.The product needs to be charged to activate, and it should be charged for 4 hours before the first use