I also like that the jack is at a right-angle and so follows the shape of the phone rather than sticking straight out. Battery seems to last well. All pretty obvious, but not a big concern. A couple of final thoughts. This is a Bluetooth earbud with support for two devices at the same time. I like the silver ones but the photo on the site is misleading and should be changed. Piece of cake to install after that. No one wants to be hit in the head so thats a non-issue, and two they would not get ANY signal laying on them. If one tiny spec of suds gets anywhere near your babys eyes then you will have a horrendously upset crying, screaming ball of hot infant on your hands for the rest of the night. youll quickly get used to inserting it, and spinning it back about a quarter turn to lock it in place.