The Purflo Starlight Colour Change Thermometer is beautifully designed colour changing thermometer that helps you monitor the temperature of your precious little ones room. The colour changes from Blue for "cold", Green for "just right" and Red for "too hot". As it is powered by a lithium battery, you can take it with you anywhere. Features: Room thermometer Rechargeable long-life battery Micro USB port for charging Fully portable Readings in Celsius Accuracy to 1°C Easy to read LCD display Batteries required 1 x rechargeable (included) Suitable from birth Dimensions: H: 11.5 cm , L: 11.5 cm , W: 4 cm Weight: 0.17 kg