The mouse itself is great, feels good in hand and looks nice. Battery life is very good. Extremely satisfied They stay on well of their own accord, without being too tight, although it might take some time for you to be accustomed to wearing them. I dislike becouse no look like original ?? Then, I used both the elixir and daily oil moisturizer before using my leave in conditioner. Advertised 5 years of refills for spices but NOT AVAILABLE in CANADA. I was going to send them back but kept them to wear at work. The bottom is very hard so adding inserts helps if worn for a long period of time. Perfect for walking around Summerfest.