Keep track of your activity day and night with the Fitbit Zip & One ($60-$100). The colorful Zip tracks your steps taken, distance traveled, and calories burned, and lets you simply tap to get your stats, while the One also tracks stairs climbed and monitors how long and how well you sleep, and can quietly wake you up in the morning by gently vibrating on your wrist. As a bonus, both sensors sync to your smartphone or tablet using Bluetooth 4.0, making battery life worries a thing of the past.
For some folks, it's fun to be able to see inside their electronics to the silicon guts that make things work. The new Nike+ FuelBand Ice ($150) does just that for the Swoosh's fitness wristband, offering up a frosted translucent surface that lets you look upon the three-axis accelerometer that tracks your time, your daily steps, calories expended, and NikeFuel, the integrated LEDs, and maybe even the Bluetooth chip — although to be honest, those really aren't that exciting. A limited edition, it will be available later this month.
Using a Fitbit to get in shape? Then odds are you're also watching your weight — so why not combine the two with the Fitbit Aria Wi-Fi Smart Scale ($130)? This high-tech bathroom floor-dweller tracks your weight, BMI, and body fat percentage, automatically uploads your stats to Fitbit.com, where they'll enhance the data from your Tracker, and automatically recognizes up to eight users so it won't be getting you confused with other members of your household.