Colour-changing nursery thermometer: The Groegg2 digital room thermometer changes colour to indicate the temperature of the room so you can adapt your child’s clothing or room environment accordingly. Digital temperature display: The soft silicone dome-shaped room thermometer features a permanently lit LED display for an accurate temperature reading of the room. USB-powered: This thermometer is powered by a USB cable* so there’s no need for expensive batteries (*excludes adaptor plug but compatible with most USB plugs used as phone chargers). Adjustable nightlight: The soft-glow light helps to create a calming sleep environment and has 3 different brightness levels so you can adjust the intensity of the light to suit your little one.