Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great...after 4-5 weeks....

At first my son hated this swing. Even if you add a blanket to help slow it down, it still went too fast for a small baby. But once my son reached 10 pounds at about 5 weeks, it wasn't so bad. Around that same time, he began to be more alert and interested. He looooves the mobile at the top. He will sit in it for a while mesmerized by the music and the reflective covering. As for me, I like the music it plays. Its slightly less annoying than some others I have heard. Finally, this seat has provided a good place for baby to nap. Our son has acid reflux so we've been instructed to keep him slightly upright when he sleeps soon after eating. This seat is perfect. He gets comfortable in it quick and naps for hours. Oh, at 10 weeks we're still on our first set of batteries.....