Liz the lamb is a musical soft toy comforter, that calms and soothes your newborn baby by playing 6 different pre-set relaxing sounds such as mimicking a mum's heartbeat, white noise, nature sounds and 3 kind of lullabies. After 10 minutes the music shuts off automaticall. Optionally, the cry sensor and/or shake sensor will switch on the last played sound if your baby wakes up in the night. The removable sound module is powered by 3x AAA batteries (not included). Once the sound module is removed, you could machine wash the soft toy at 40 degrees Celsius.