it is true that you can hear the birds gently and thus the word should be gently underlined. So for people with a really deep sleep, he would not be recommended. Optical chic, about one hand in size, but it is too quiet. If my son is not so much find joy in the singing, (we always set the alarm for homework) I would have sent him back. Oh yes, the second hand is actually not to hear and not to see the hand in the dark (if it is not previously irradiated with continuous lighting)
