The Philips AVENT Digital Bath and Bedroom Thermometer is a convenient way to monitor the temperature both in baby's room and in the bath. It has also been designed and tested as a safe, fun bath toy. Product Features: * Accurate temperature readings for bath or bedroom * Complies with all relevant toy and safety standards * Floats in water * Operating temperature range: 10-45 °C * Accuracy: +/-1 °C * Battery type: 2 x LR44