It could have been more secure/sturdy To apply push down in to the bottom first, open lid, peal sticker, apply to lid. I know i have to push the button on the case to start the charge process, but as soon as they charge, they power on and connect to my phone. Will do the trick under my wedding dress. The rubber ear inserts arent replaceable, I use alcohol wipes to clean them. i keep buying this again. They are all beautiful. Exactly what i wanted before i even went shipping without success. Even with larger, swollen feet this is the correct size to avoid slipping. Prepare for possible disaster with delivery and you might really enjoy having this machine.