Both will include a much-needed Bluetooth 4.0 upgrade for wireless syncing with mobile devices (looks to be iOS only to start with Android support coming later).
I’ve been using the Fitbit Ultra and have often wondered why they hadn’t included Bluetooth. With the addition of Bluetooth you won’t have to wait until you’re near the computer/docking station for it to update with your steps.
The Fitbit Zip tracks steps, distance, calories burned and syncs with computer and now smartphone. Like the others it is wearable on your pants, a pocket, belt or bra and is water resistant. Unlike the previous versions, it has a replaceable watch battery that will last up to six months.
The Zip is the smallest device at 1.4 inches H x 1.1 inches W. It comes in five colors: blue, magenta, white charcoal, and lime.
The Fitbit One is a wireless activity and sleep tracker, which includes the same features as the Ultra including steps, distance, calories burned, stairs climbed, as well as sleep tracking. Unlike the Ultra, this will sync with the app and your iOS device. From the side view it looks like it will fit more nicely than the Ultra which didn’t work on thicker materials and forced the use of the adapter.
The Fitbit One, like the Ultra, has a chargeable lithium battery and comes with a charging USB dongle instead of the docking station of its predecessors. It comes in black and burgundy, with a height of 1.89 inches and width of 0.76 inch.
Pictures from Fitbit