What are the best wearable devices for boxing?

"Not to say any of them weren't good, I just didn't think they were worth the price tag. This one however seems find that good balance between price and features. It's not as in depth as some others and really I like the different approach Moov took to fitness tracking. No steps or stairs counting just basic activity level throughout the day. It has goals and medals and levels to achieve etc. It has social features which are kind of fun, but my use is for myself mostly and don't really need to "compete" with anyone or prove I am more active than my friends on a daily basis.(or less active really). It requires NO charging which is one of the biggest selling points that drew me in. Not having to take it off and plug it in was important to both me and my wife. Battery life is TBD but for the price of a watch battery I'm back up and running. No worrying about internal battery recharge life or something going wrong. Simples and easy. I do NOT consider myself a world class athlete, just a dad who's metabolism isn't what it used to be and trying to get ahead and repair the damage I've done when I was younger and could do/eat (or more importantly drink) as I pleased."