Winner of Practical Parenting Best Buy award 2006 and FQ Magazine Top Gear award 2006. The innovative Grobag Egg changes colour to let you know at a glance whether the temperature of a room is too low, too high or just right, helping you to maintain a safe sleeping environment for your baby. Mains powered. LCD readout. Gift boxed. Complies with UK safety standards EN60950, EN61558-1, EN61558-2-6.