I found it very helpful for newborn night feedings and for reassurance about room temperature at a glance when you crack open one eye half asleep just enough to glimpse to quickly check on your baby (I was always worried that it is too hot or too cold for him). It has a handy instruction on which sleepbag TOGs to use and how to dress your baby for each temperature range​/​color. The GroEgg2 is digital, colour-changing nursery thermometer and nightlight. It helps keep baby's sleep space safer by displaying room temperature and changing color accordingly: blue for 16°C and below, yellow for 16-20°C, orange for 20-24°C, and red for over 24°C. - Changes colour: Four different colours that change according to the room temperature. - LED display: Clearly shows the room temperature. - Minimal design: Soft silicone shell that’s smooth to touch. ​ - Adjustable brightness: Three brightness levels. - USB powered: 200cm mains-power USB cable. - Comes with a manual on how to dress your baby for each temperature range​/​color. No original packaging. There is a tiny rub mark on the matte silicone shell but you really need to strain your eyes to see it (see photo #5).