Not all electronic products have radiation. In fact, there is radiation everywhere where mobile phones can find WIFI signals, and early education machines are no exception, but the radiation of early education machines is much smaller than that of other mobile phones, routers, microwave ovens and refrigerators. This can be ignored, don't worry too much.

It is not advisable to use bright toys for a long time. The bright light emitted by flash toys, especially in dark environment, is particularly irritating to the baby's eyes. Long-term use may cause damage to the cornea, retina, especially macula. Moreover, some inferior flash toys are more likely to cause irreversible damage to the baby's vision.