8 Types of Sleep Sounds: The sound machine includes sounds such as rain, bird chirping, ocean waves, stream, campfire, train, crickets, and church bells (Non looping!). Each sound has a unique soothing track and independent volume control, allowing for 256 combinations. Additionally, the sleep sound machine creates a personalized sleep, relaxation, or calming experience for both adults and children.Built-in Large Capacity Battery: This portable sound machine is compact yet powerful, featuring a 2600mAh battery (and yes, weve included a power adapterthoughtful, right?). It provides up to 10 hours of playtime. You can easily carry it with you wherever you go or place the portable noise machine anywhere you need it.5~180 Minute Timer Settings: The portable brown noise machine features an auto-off timer that can be set from 5 to 180 minutes in 5-minute increments. The sound gradually fades out until it turns off, making it the most considerate brown noise machine you'll ever own.Bluetooth Speaker: With professional acoustic design, every sound, from chirping birds to your daily songs, feels incredibly real and immersive. Use Bluetooth 5.0 to connect and transmit your favorite songs via the S660pro, transforming your noise machine into a high-quality speaker.30-Level Warm Night Light: Equipped with a 30-level warm night light to create the perfect ambiance and provide sleep assistance for children, adults, or babies. Transform your surroundings and use it as the ideal soothing baby sleep aid for nighttime feedings. This sound machine with a night light is perfect for meditation, sleeping, or waking up at night.11 Adjustable Brightness Levels and Breathing Therapy Experience the perfect sleep sound machine with 11 color and brightness settings along with a breathing therapy mode. Follow the light's breathing pattern to find inner calm between each inhale and exhale.