6 melodies to comfort and sooth your baby back to sleep A soft toy comforter that calms and soothes your newborn baby by mimicking a mum's heartbeat. Operated by 3 x AAA batteries. 6 different sounds Heartbeat sound, white noise, nature sounds and 3 soothing melodies. Activate by shaking No need to switch ON the music, just shake and he will start playing the last chosen song Timer with auto shut-off After 10 minutes, the sound will automatically switch off Switches on if your baby starts crying The cry sensor will switch on the sound if your baby wakes up in the night Choose your own volume You can set the volume to your preferred level