Features: 5 Soothing Sound SD Card Avaiable: White sound, ocean, rain, lullaby, clock and support SD card play, high-fidelity sound effects . Night- Light: with soft, warm white light. So you can also use it as a night light, especially if your baby or child is afraid of the dark. Multiple of Uses: You can use it to help you fall asleep, turn out distractions, or boost your focus while you study or work. Auto-off Timer: The auto-off timer can be set for 30, 60, 90 minutes to save energy. Adjustable Volume: Adjustable volume control allows you get the sound just right. Great For Travel: Small size and lightweight, easily fits into a bag or suitcase making it the perfect travel companion.