This alarm clock should always be connected to usb, the battery is only a memory function Widely Used This kids alarm clock is beautiful and easy to use. It can be used as an alarm clock, multicolored night lights, mood night light, mood lighting, bedroom clocks, interior lighting, alarm clock. 5 Colors of LED Light and 5 Sounds The luminous alarm clock has 5 colors of light and 5 sounds. white, yellow, blue, purple and green. it also has 5 sounds to wake up your child in the morning (bird, 3 lullabies for children, DIDIDI sound), you can choose your favorites at the right volume for a gentle wake up. LED Display and 2 Time Modes and 2 Temperature Modes Alarm clock has an LED display which clearly shows the time, date and temperature. There are two time formats, 12 hour and 24 hour, which can be adjusted. There are also two temperature modes: Fahrenheit and Celsius. Child-friendly Material The alarm clock is made of high quality ABS material, it is really safe for your children. The beautiful clock must be a birthday present or a gift for Thanksgiving, Christmas. Kids Alarm Clock It's a simple and fun way to tell your child when to get up and to bed, colorful lights and soothing music can help your child fall asleep better. it can also help them develop good habits. Product description SLEEPING The blue light will be on 30 minutes before the sleep time. that tell your child it's time to go to bed.After 30 minutes, the light will turn off, the eyes will close, the moon icon will appear, and the LCD screen will darken to let your child know it's time to fall asleep. PLAY The yellow light will be on to wake up your kids, you can set the alarm clock 30mins before wake up time to make sure your kid wake up, kids can play stay in bed for 30mins. WAKE UP The green light comes on, it reminds the child that it is time to get up. The LCD screen eyes will open, the sun icon will appear, the green light will stay on for 1 hour, and the LCD screen will return to the brightness set last time. ROUPILLON When the nap function is on, long press the SNOOZE button to view the rest of the nap. When the Nap function is off, long press the SNOOZE button to display the alarm time CHILD LOCK In any mode, short press the LOCK button to lock all functions. Long press the LOCK button to unlock the clock.RINGTONES 3 kinds of soft piano music, Cuckoo Birdsong and " DIDIDI ", the alarm duration is 5 minutes. Soft piano music, birdsong, white noise, children can enjoy the sound to fall asleep. Press the button. Increase / Decrease the volume.THERMOMETER Temperature display: / (default- ) Temperature range: 32-122 / 0-50 Accuracy: 0.1 / LIGHT Night light 5 colors: white, yellow, blue, purple and green. 7 kinds of lighting time can choose: 10mins 20mins 30mins 45mins 60mins 90mins or always on.NOTICE Remove the insulation from the CR2032 memory button cell before turning it on. The CR2032 memory battery can save your settings and time for up to 2 years without power. USB POWER SUPPLY 5V power input 5V USB output PACKAGE 1 x Alarm clock 1 x 1.8m USB cable 1 x Instruction manual