Mybaby Portable Travel Sound Machine White Noise White & Green Soothing Sounds: Helps to soothe and comfort little ones with 4 relaxing sound options; choose between Heartbeat, White Noise, Ocean, or Lullaby to create a peaceful sleep environment anywhere Auto Shutoff: Designed with safety in mind, the battery-operated SoundSpa is cord-free; auto-off timer conserves energy with 15, 30, or 45-minute interval options; requires 3 AAA batteries (not included) Durable & Portable: Made with durable plastic material (BPA free) to withstand most bumps and tumbles; small and lightweight, it fits conveniently in diaper bags, luggage, purses, and more Integrated Features: Adjust the volume or choose your sound option directly on the sound machine; integrated clip allows quick accessibility and easy transport between strollers, bags, and car seats