Aden and Anais Serenity Star Clock EUC. Like New. sound machine / room temperature indicator/ feeding diary - will keep track of feeding. It can be plugged in or battery operated for easy use in and out of the nursery. The feeding diary records and displays the last time you started feeding and on which side (if nursing). The sound machine plays two lullabies, as well as a heartbeat and white noise to help baby sleep through the night. The room temperature indicator displays in either Celsius or Fahrenheit and glows red, blue or white if the room is above, below or at the ideal temperature.