The Nuvo Advanced Pregnancy Audio System “provides a simple yet sophisticated way to safely deliver sounds, music, and recorded voices directly to your baby in the womb,” says maker Ritmo. “This system comes with the Safe and Sound Controller, which continually adjusts the music decibel level to provide an added level of safety to the listening experience for your developing child.”

The four-speaker surround sound belt offers a high-quality audio experience, while remaining lightweight and comfortable enough to wear at home and on-the-go. It securely positions speakers at strategic locations to ensure your baby receives a high-quality 360 degree audio experience, Ritmo says. It’s compatible with your phone and all music devices that feature a standard 3.5mm audio headphone jack.

“When you listen to different kinds of music during and after pregnancy, you’ll be stimulating your baby’s senses and improving his or her brain development,” the company adds. “In fact, developing babies can hear sounds as early as 17 weeks.”

It’s $123 here.