Love it! I'm actually awake right now because I heard a nose (I have super mom ears) and I looked on the moniter and could see that the seahorse is lit up and shes laying there looking at it. I just looked again a couple minutes later and she's sleeping again and it's done playing. She'll go for it first thing when she wakes up in the morning too and will spend an easy 30 minutes with it.
I had originally got her a glow worm because I had one when I was a kid and loved it, but then I read reviews and the seahorse had many more glowing reviews (!) so I returned the worm and got the horse and all the reviews are true.
When he gets older, like closer to a year, make sure he gets a Scout. Amelia has Violet, the female version, and that thing is awesome too. It knows her name, her fav color, animal, and food. If you touch his left foot 3 times he plays 10 minutes of bedtime music and we do that one sometimes at night too. We alternate between violet, glow house and ladybug. But the ladybug burns batteries super fast so I think it's going to be retired soon. I don't think I've changed seahorses batteries at all yet, besides putting in good ones after manufacturers wore out.