Moov made a name for itself last year with its first fitness wearable, which did a whole lot more than count your steps: It actually tracked your body's movement in three dimensions and used that data to power mobile personal trainer apps. Now, the company is back with the MOOV NOW, a smaller and slimmer device meant to help you achieve the ultimate workout. It works pretty much the same as the original MOOV: You can strap it to your wrist, arm, or ankle and use a variety of apps to track specific workouts. You also receive advice from a virtual fitness coach based on your exact movement, for example if your running stride is too hard, or if your swimming strokes aren't strong enough. But while the first device was practically as big as a typical watch face, MOOV NOW is around the size of a quarter. It also relies on replaceable watch batteries for up to six months of typical usage, while its predecessor had to be charged every few days. You can preorder MOOV NOW today for $60 (it will retail normally for $100), and it's expected to ship later this fall.