The Sync smartbands were initially aimed at parents wanting to keep track of their wandering children, but now include a wide variety of additional features to appeal to those who don't have kids as well. The latest version of the smartband includes the standard location tracking as well as new fitness and sleep trackers.
The Sync smartbands are constructed out of hypoallergenic, water-resistant rubber and come in five different color options -- green, blue, white, pink and orange. There's also a nifty glow-in-the-dark version. The smartband comes in child and adult sizes.
The smartbands allow parents to set a 'safe zone'. When a child wanders beyond the safe zone, a notification is automatically sent to the parent's smartphone. This function works even in the absence of Internet or a cellphone data plan.