The best smartwatch usually costs more than this one. Fastfox isn\u2019t fooling when it says it costs $10 \u2014 but a smart watch? Make that a smart health sensor worn on the wrist. About the size of a quarter+, it\u2019s a small oblong with a replaceable battery powering Bluetooth that fits inside a thin plastic wristband. Which is probably equal in size to that of the best smartwatch for kids. So yes it\u2019s smart and yes you wear it on your wrist. Don\u2019t like the black band? Choose from among the other colors like red or green, since Fastfox pops in and out of the center in a few seconds time. But you have to keep the band on all the time or it can\u2019t read your stats. FYI \u2013 the battery has a fairly long life of about 4 months+ and is user-replaceable. Plus its standby mode kicks in when 20+ hours of inactivity occurs.\r\nSmart Design\r\nA plastic disk is included that fits over Fastfox and is more of an \u201caccessory\u201d than a necessity, since the band\u2019s plastic and the sensor itself is IP67 waterproof. So it doesn\u2019t care if you sweat or even go into the shower (the iPhone, no it doesn\u2019t go along with that). There\u2019s a set of colorful stickers that can go over the plastic disc for customizing Fastfox. Some will use it, some won\u2019t. I didn\u2019t. But since the sensor holds in the band through friction, I can see using the disc as an added safety measure when wearing it.\r\nSmart Stats\r\nPaired with my iPhone, Fastfox is primarily a data \u201ctracker\u201d: use it to record activity as I move about during the day and provide info on how far I\u2019ve traveled, steps taken and calories burned.\u00a0 Or let it show me how I sleep: from what Fastfox says, I don\u2019t do that so well. I can\u2019t say that wearing the band was all that comfortable to start, but after a few hours it got forgotten \u2014 lots of holes in the band to catch the buckle help to keep it from sticking to the skin. I was told that it can be kept in a pocket if not worn and it will still work. But where\u2019s the fun of that (\u201cpocket band?\u201d, don\u2019t think so). Still some might prefer to put it in a pocket of their jammies rather than wearing it to bed.\r\nSmart Light\r\nFastfox also does something that\u2019s definitely more more \u201csmart watch\u201d than not -- in that an LED in the strap can be made to illuminate whenever there's an incoming call or text message. Both are useful things; turning a phone's ringer off and letting Fastfox visually do the notifying is more quieting than using vibration \u2014 less intrusive too, especially when eating and helpful when the weather needs the phone kept from coming out. This and text signaling are fine features, provided that the phone\u2019s in range. and obviously choosing this option relies on the app, as does pretty much everything else that Fastfox can do. But big thumbs down for it not working for iOS right now -- Android users, they can hit the illumination while the iPhone can't (at least for not until the updated app hits iTunes in early 2015). But both OS\u2019 can join in on the social media option for sharing and comparing activity data through leaderboards\r\nSmart Health\r\nFastfox is an easy slide into the whole \u201csmart health\u201d issue and certainly doesn\u2019t empty the pocket, wallet or purse in any significant way. That makes the cost issue negligible. It doesn\u2019t do a lot of things, but what it does can be useful for those looking to document what's going on when awake (or asleep) or prove to themselves that they aren\u2019t leading a sedentary life. Or finally get that it's time to get up and start moving around already!