LED display: Shows temperature, time, date, and day of the week. 12/24-hour conversion. Temperature can be switched between Celsius and Fahrenheit (0°C to 50°C, 32°F to 122°F). Multi-music: Chord/nature alarm, colorful stars, rhythm projection with music. Multicolored color changing: The colorful light is beautiful; it can help you rediscover the universe by changing the color of a part of the sky at home. Realistic starlight: Casts realistic starlight onto the ceiling or wall, creating a comfortable and relaxing sleep environment for children, soothing and comforting their sleep, and also very suitable for adults to achieve a relaxing and calming effect. Alarm clock function: You can set it to wake your child in the morning, but you can also play it and fall asleep at bedtime. The wake-up and sleep functions work well. Perfect for dorm students, parties, families for special occasions, and children to relax. Dimensions: 10x8x10 cm Power supply: 3 AAA 1.5V batteries (not included) Contents: 1 x star projector/wake-up light, 1 x instruction manual