Luckily these can also be in use while charging. I know other companies provide custom sound levels, but this one is very user-friendly, able to modify each ear cuff volume separately, and has a sound test that will automatically create a new sound profile just for your hearing. My bike is off the floor in our garage. Hitch lock works great, just wish it had a way to lock the bikes down. They just came out in Oct. Just the key holder with a tag on it. Looks good, holds heaps of stuff. I could have worn the 10s but would have worried about twisting an ankle in them. If you were thinking about springing for some airpods or galaxy buds, DONT! Only "trouble" is that the soles are surprisingly noisy when you walk, but thats not really an issue unless you plan on sneaking up on somebody.