Listen to the sounds your baby makes! Sonoline C is a Personal Sound amplifier that allows you to hear your baby’s sounds like kicks, movement and beats. Safe and fun, Sonoline C promotes bonding with your baby for both mommy and daddy or share your experience with your other family members.Record the sounds to your computer to listen to later when the baby is older – a timeless keepsake. Recorded sounds can also be shared via Social Media to Friends and Family. Or record Mommy’s beat to later use to soothe your baby by playing the sounds back. Recording cable not included. Package Includes: the Sonoline C monitor, and everything needed to get started. Volume is adjustable. Uses 3xAAA batteries (included). Compact, Easy to Use and Lightweight. Uses standard 3.5mm audio jacks so you can use with your own headphones.Best when used after the 12th week. A beat is detectable between 8 and 16 weeks only under ideal conditions. Each week, as the baby grows stronger, it will be easier to hear the beat.