Features: 8 Soothing Sound: White sound, thunder, ocean, rain, bird, brook lullaby 1 and lullaby 2. 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 5, 15, 30 minutes to save energy. Alarm Clock: Weak you up on time, help sleep and weak up 2 in 1. 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.