Portable sound machine helps you achieve naptime for your child, no matter where you happen to be Five soothing sounds, including shushing and heartbeat, relax your child so they can sleep Adjustable nightlight features three glow levels and is perfect for use during nighttime feedings Comes with an adjustable strap, so you can attach this device to strollers, car seats, cribs, and more Features adjustable volume, overnight battery life, and auto shut-off option for added convenience Includes a USB charging cable so you can keep this device's internal battery charged and ready for use