The Philips Avent Digital Bath and Bedroom Thermometer doubles as a convenient way to monitor the temperature both in baby’s room and bath. It has also been designed and tested as a safe, fun bath toy. The Product that comply to the toy’s standard have been thoroughly tested to ensure they meet these norms and are totally safe. Designed as a safe and fun toy for babies of any age to play with when bathing. The digital bath and room thermometer allows you to conveniently determine the ideal temperature of your baby’s bath or room. Your baby will feel most comfortable in bath if the water is between 36.5 °C and 38 °C. A temperature of 39°C and above is too hot and your baby could get burned! At a room temperature of about 18°C babies feel most comfortable when sleeping. Blue flower Operating temperature range: 10-45°C Battery type: LR44 Number of batteries: 2.